CN221655609U - Device for breaking a frangible member engaged with a medical catheter - Google Patents

Abstract

The present application provides a device for breaking off a frangible member engaged with a medical catheter, the medical catheter comprising a first catheter segment and a second catheter segment interconnected by a connector having a first flange, the frangible member engaged with the second catheter segment, the device comprising a first assembly having a first end and a second end opposite the first end, the first assembly comprising: a first slot formed at the top of the first assembly and extending in the longitudinal direction of the first assembly from a first end of the first assembly to a second end thereof for receiving the first conduit section and a portion of the second conduit section; a first slot formed perpendicular to and recessed from the first slot, the first slot being adjacent the first end of the first assembly for receiving the first flange; and a first tube gripping protrusion protruding from a surface of the first slot, the first tube gripping protrusion being positioned closer to the first end of the first assembly than the first socket.

Description

Device for breaking a frangible member engaged with a medical catheter

Technical Field

The present application relates to the field of medical devices, and more particularly, to a device for breaking a frangible member that is engaged to a medical catheter.

Background

And a breakable element is arranged in part of the medical catheter and is used for plugging the catheter liquid path before the catheter is opened. After breaking the frangible member, the fluid path is opened and fluid begins to flow through the catheter. To ensure that the frangible member does not abnormally break during transport or use of the catheter or catheter-containing liquid drug, resulting in leakage of liquid or unavailability of the product, the frangible member is typically designed to have relatively high strength. However, some groups may not be able to easily break the frangible member. For this reason, an auxiliary tool option is needed to assist the care or patient in breaking the frangible member to initiate treatment.

Disclosure of utility model

It is an object of the present application to provide a device that assists a patient in easily breaking a frangible member engaged with a medical catheter.

According to one aspect of the present application there is provided a device for breaking a frangible member engaged with a medical catheter, the medical catheter comprising a first catheter section and a second catheter section, the first and second catheter sections being interconnected by a connector having a first flange, the frangible member being engaged with the second catheter section, wherein the device comprises a first component having a first end and a second end opposite the first end, the first component comprising: a first slot formed in a top portion of the first assembly and extending in a longitudinal direction of the first assembly from a first end of the first assembly to a second end thereof, the first slot for receiving a first conduit section and a portion of a second conduit section; a first slot formed perpendicular to and recessed from the first slot, wherein the first slot is proximate to the first end of the first component and is configured to receive the first flange; and a first tube clamping protrusion protruding from a surface of the first groove, the first tube clamping protrusion being positioned closer to the first end of the first assembly than the first socket.

In some embodiments, the first component is formed as an elongated handle comprising a front face having a palm-receiving recess for receiving an operator's palm and a rear face having a plurality of finger-receiving recesses for receiving the operator's fingers.

In some embodiments, the first groove includes a central recess and a flared portion connected to the central recess, wherein the central recess is configured to receive the first conduit section and a portion of the second conduit section.

In some embodiments, the flared portion includes a planar bottom surface extending from an upper edge of the central recess and two opposing sloped sides intersecting the planar bottom surface.

In some embodiments, the depth of the first groove is 1.1 to 1.5 times the diameter of the medical catheter.

In some embodiments, the central recess has a circular arc shaped cross section, the diameter of the central recess being greater than the diameter of the medical catheter.

In some embodiments, the central recess has a central angle greater than 180 degrees and less than or equal to 230 degrees.

In some embodiments, the device further comprises at least one additional first tube gripping protrusion protruding from a surface of the central recess, wherein each additional first tube gripping protrusion is located between the first socket and the second end of the first assembly.

In some embodiments, the first tube clamping projection comprises two circular arc segments disposed opposite each other, each of the circular arc segments protruding radially from a surface of the central recess by 0.3 to 0.7mm and having a length of 2.0 to 4.0 mm.

In some embodiments, the first tube clamping projection includes two circular arc segments disposed opposite each other, each of the circular arc segments protruding radially from a surface of the central recess by 0.3 to 0.7mm and having a central angle of 34 degrees to 72 degrees.

In some embodiments, the first tube grip tab has a width of 1.0 to 2.0 mm.

In some embodiments, the first component includes a plurality of weight-reducing grooves or holes.

In some embodiments, the medical catheter further comprises a third catheter section, the second catheter section and the third catheter section being interconnected by the frangible member, the frangible member having a second flange; wherein the device further comprises a second assembly having a first end and a second end opposite the first end, the second assembly comprising: a second slot formed in a top portion of the second assembly and extending from a first end of the second assembly to a second end thereof; a second slot formed perpendicular to and recessed from the second slot, wherein the second slot is proximate the first end of the second assembly and is configured to receive the second flange; and a second tube clamping protrusion protruding from a surface of the second groove, the second tube clamping protrusion being positioned closer to the first end of the second assembly than the second socket.

In some embodiments, the second component is formed as a rod having a generally C-shaped cross-section.

In some embodiments, the diameter of the rod is greater than 26mm and less than or equal to 40mm.

In some embodiments, the second groove has a circular arc-shaped cross section, and the diameter of the second groove is greater than the diameter of the medical catheter.

In some embodiments, the central angle of the second groove is greater than 180 degrees and less than or equal to 230 degrees.

In some embodiments, the second tube clamping projection includes two circular arc segments disposed opposite each other, each of the circular arc segments protruding radially from a surface of the second groove by 0.3 to 0.7mm and having a length of 2.0 to 4.0 mm.

In some embodiments, the second tube clamping projection includes two circular arc segments disposed opposite each other, each of the circular arc segments protruding radially from a surface of the second groove by 0.3 to 0.7mm and having a central angle of 34 degrees to 72 degrees.

In some embodiments, the second tube grip tab has a width of 1.0 to 2.0 mm.

In some embodiments, the second component includes at least one weight-reducing groove or hole.

In some embodiments, the first component has a length of 100mm to 130mm and/or the second component has a length of 30mm to 40mm, inclusive.

In some embodiments, the device further comprises a connector configured to connect the first component and the second component.

In some embodiments, the connection is formed as a string, both ends of which are fixed to the first and second components, respectively.

In some embodiments, the connector comprises a first magnetic member and a second magnetic member configured to magnetically engage each other, wherein the first magnetic member is mounted to the first assembly and the second magnetic member is mounted to the second assembly.

The foregoing is a summary of the application, and there may be a simplification, generalization, and omission of details, it being understood by those skilled in the art that this section is merely illustrative and is not intended to limit the scope of the application in any way. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

Drawings

The above and other features of the present disclosure will become more fully apparent to those having ordinary skill in the art from the following detailed description and appended claims when taken in conjunction with the accompanying drawings. It is appreciated that these drawings and detailed description depict only several exemplary embodiments of the inventive concepts and are not to be considered limiting of their scope. The present application will be described more specifically and in detail with reference to the accompanying drawings.

FIG. 1 shows a schematic view of a port portion of a medical fluid bag and a medical catheter mated therewith;

Fig. 2 illustrates a schematic view of an apparatus for breaking a frangible member engaged with a medical catheter in accordance with one embodiment of the present application.

FIG. 3A illustrates a perspective view of a first component of an apparatus for breaking a frangible member engaged with a medical catheter in accordance with an embodiment of the present application;

FIGS. 3B and 3C are an end view and partial enlarged view, respectively, of the first assembly from the left side of FIG. 3A;

FIGS. 3D and 3E are a top view of the first assembly and a cross-sectional view of the first assembly taken along line A-A in FIG. 3B, respectively, as viewed from above in FIG. 3A;

fig. 3F and 3G are front and rear views, respectively, from front and rear sides of the first assembly shown in fig. 3A;

FIG. 4A illustrates a perspective view of a second component of an apparatus for breaking a frangible member within a medical catheter in accordance with an embodiment of the present application;

FIG. 4B is an end view of the second assembly from the right side in FIG. 4A;

FIGS. 4C and 4D are a top view of the second assembly shown in FIG. 4A and a cross-sectional view taken along line B-B of FIG. 4B, respectively;

Fig. 4E is an end view of the second assembly from the left side in fig. 4A.

Element list

100. Medical fluid bag

110. Bag body

120. Infusion tube

130. Filling tube

200. Medical catheter

210. First conduit section

220. Second conduit section

230. Third conduit section

240. Frangible member

242. Flange

241. Left tube part

243. Right pipe part

243A pipe section

243B frangible tip

250. Connector with a plurality of connectors

251. Left tube part

252. Flange

253. Right pipe part

300. First component

301. First end

302. Second end

310. First groove

311. First slot

312. First tube clamping projection

312A,312b protrusions

313. 314 Additional first tube grip protrusions

320. Palm receiving recess

330. Finger receiving recess

330-1, 330-2, 330-3, 330-4 Finger-receiving pockets

340. Lightening hole

332. Weight-reducing groove

315. Expanding part

316. Center concave portion

315A flat bottom surface

315B inclined side

400. Second component

401. First end

402. Second end

410. Second groove

411. Second slot

412. Second tube clamping projection

412A,412b protrusions

440. Weight-reducing groove

Detailed Description

The following detailed description of exemplary embodiments of the application refers to the accompanying drawings, which form a part hereof. The drawings illustrate specific exemplary embodiments in which the application may be practiced. The detailed description, including the drawings, describes the embodiments in sufficient detail to enable those skilled in the art to practice the application. Other embodiments of the application may be utilized and logical, mechanical, etc., changes may be made by those skilled in the art without departing from the spirit or scope of the application. The reader of the following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present application is defined only by the appended claims.

In the present application, the use of singular terms shall also include the plural meaning unless explicitly stated otherwise. In the present application, the use of "or" means "and/or" unless stated otherwise. Furthermore, the use of the terms "include" and "comprise" as well as other forms of description such as "comprising" and "comprises" are not limiting. Furthermore, unless explicitly stated otherwise, terms such as "element" or "component" cover elements and components comprising one unit, as well as elements and components comprising more than one sub-unit. Furthermore, the section headings used herein are for organizational purposes only and are not to be construed as limiting the subject matter described.

Spatially relative terms, such as "lower," "upper," "above," "upper," "left," "right," "horizontal," "vertical," "edge," "longitudinal," "transverse," and the like, as used herein, may be used herein to facilitate a description of one element or feature's relationship to another element or feature as illustrated in the figures. In addition to the orientations depicted in the figures, the spatially relative terms are intended to encompass different orientations of the device in use or operation. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatially relative descriptors used herein interpreted accordingly. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In the present application, unless otherwise specified, all numerical ranges mentioned include the endpoints thereof and consider conventional tolerances in the art, for example, tolerances of.+ -. 0.1mm,.+ -. 0.2mm,.+ -. 0.3mm,.+ -. 0.4mm,.+ -. 0.5mm, etc.

Referring to fig. 1, there is shown a schematic view of a port portion of a medical fluid bag and a medical catheter mated therewith. The medical fluid bag 100 comprises a bag body 110 (only partially shown in fig. 1), a tubing 120 and a filler tube 130. The infusion tube 120 and the filling tube 130 are attached to the bag body 110 and extend away from the bag body 110, respectively, and may be separated by a weld. The filling tube 130 has one end attached to the bag body 110 and the other end being a free end, through which medical fluid can be filled into the bag body 110. After filling a predetermined amount of medical fluid into the medical fluid bag 100, the filling tube 130 is sealed using a sealing stopper (not shown).

In the embodiment shown in fig. 1, the free end of the infusion tube 120 is connected to one end of a medical catheter 200 for drawing medical fluid out of the medical fluid bag 100. As shown in fig. 1, the medical catheter 200 includes a first catheter section 210, a second catheter section 220, and a third catheter section 230 in order from right to left. Wherein first conduit section 210 and second conduit section 220 are interconnected by connector 250, second conduit section 220 and third conduit section 230 are interconnected by frangible member 240, and third conduit section 230 may be fluidly connected to infusion tube 120 directly or by an additional connector.

As shown in fig. 1, frangible member 240 includes a left tube portion 241 and a right tube portion 243 with a flange 242 disposed therebetween. The left tube portion 241 may be sealingly joined into the third tube segment 230, for example, by an adhesive, and the right tube portion 243 may be sealingly joined into the second tube segment 220, for example, by an adhesive. The right tube portion 243 further includes a tube segment 243a and a frangible tip 243b for occluding the tube segment 243 a. A weakened portion (not shown) may be present between the tube segment 243a and the frangible tip 243b. The weakened portion may have a smaller diameter or reduced strength as compared to the tube segment 243a and frangible tip 243b. When frangible tip 243b is bent relative to tube segment 243a, frangible tip 243b is susceptible to breaking at the weakened portion and disengaging from tube segment 243a, thereby exposing the orifice of tube segment 243a, thereby allowing medical fluid in medical fluid bag 100 to flow into second tube segment 220, and thus into first tube segment 210 downstream, via frangible member 240. It will be appreciated that the overall and partial shape of frangible member 240 can be suitably modified as desired and is not limited to the configuration or size shown in fig. 1. For example, in some embodiments, the frangible member 240 may not include the flange 142 of FIG. 1, but rather the upper and lower tube portions may be integrally connected.

The connector 250 includes a left tube portion 251, a flange 252, and a right tube portion 253. The left tube portion 251 may be sealingly engaged within the second tube segment 220 and the right tube portion 253 may be sealingly engaged within the first tube segment 210. The inner diameter of the left tube portion 251 of the connector 250 is smaller than the size of the frangible tip 243b such that the frangible tip 243b can be blocked by the left tube portion 251 from flowing into the downstream first tube segment 210.

To effect the breaking of frangible member 240, the patient typically needs to apply a deforming force to frangible member 240 to bend frangible tip 243b relative to tube segment 243 a. The present application provides a means for assisting an operator (e.g., a patient's family or medical personnel, etc.) in stably and conveniently applying a deforming force to frangible member 240.

Fig. 2 illustrates an apparatus for assisting an operator in breaking a frangible member engaged with a medical catheter in accordance with one embodiment of the present application. As shown in fig. 2, the apparatus includes a first assembly 300 and a second assembly 400. The structure of these two components will be specifically described below with reference to the drawings.

Fig. 3A-3G illustrate the structure of the first assembly 300, wherein fig. 3A illustrates a perspective view of the first assembly 300; fig. 3B and 3C show an end view of the first assembly 300 and an enlarged view of a portion thereof, respectively, from the left side in fig. 3A; FIGS. 3D and 3E show a top view of the first assembly 300 and a cross-sectional view thereof along line A-A in FIG. 3B, respectively; fig. 3F and 3G show front views from the front and rear sides, respectively, of the first assembly 300.

As shown in fig. 3A, the first component 300 has an overall elongated handle shape, including a first end 301 and an opposite second end 302, and the length of the first component 300 is much greater than its width, and its length L01 is preferably 100mm to 130mm, inclusive. As seen from the end, as shown in fig. 3B, the first assembly 300 is generally flat, rectangular in shape and sized to be held by the hand of an operator.

To achieve a comfortable and stable grip, the first component 300 may have an ergonomic design. Specifically, one side, e.g., the front, of the first assembly 300 has a palm-receiving recess 320 for receiving the palm of an operator's hand, and the opposite side, e.g., the rear, has a plurality of finger-receiving recesses 330 for receiving the fingers of an operator. The recesses 320, 330 are shaped to conform to the curve of the hand shape of the operator.

Referring to fig. 3E and 3G, the leftmost finger-receiving recess 330-1 has a greater width than the other three finger-receiving recesses 330-2, 330-3, and 330-4, allowing different operators to adjust the position of their index fingers in the recess 330-1 to better accommodate operators of different hand types.

In the illustrated embodiment, the palm receiving recess 320 and the finger receiving recess 330 are disposed closer to the second end 302 side of the first assembly 300, enabling an increase in bending moment for the operator, making the bending operation more labor-saving. Preferably, the outer peripheral edge of the first component 300, particularly the portion to be gripped by the hand of the operator, is rounded to increase the gripping comfort.

In order to reduce the weight of the first assembly 300 and save materials, the first assembly 300 may further be provided with a plurality of weight reducing holes 340 penetrating the first assembly 300. Referring to fig. 3D and 3E, for example, weight-reducing holes 340 are provided at the edge of the top of the first assembly 300. It will be appreciated by those skilled in the art that the shape and size of the lightening holes 340 may be set to be different from each other according to the shape and structure of the first assembly 300.

Further, a weight-reducing groove 332 (fig. 3G) may be further disposed on the side of the first component 300, so as to further reduce the weight of the first component 300 and improve the holding comfort. It will be appreciated by those skilled in the art that the lightening holes and the lightening grooves may not be limited to the embodiment of the present application shown, but may be flexibly arranged as required.

The top of the first assembly 300 is formed with a first slot 310. The first slot 310 is formed generally midway on top of the first assembly 300, extending from the first end 301 to the second end 302 of the first assembly 300 along the longitudinal direction X ₁ of the first assembly 300. The first slot 310 is configured for receiving the medical catheter 200, in particular the first catheter section 210 and a portion of the second catheter section 220 (right part in the drawing).

As shown in fig. 3B, the first groove 310 includes a flared portion 315 and a central recess portion 316, the central recess portion 316 being located at a bottom center position of the first groove 310, the flared portion 315 being above and connected to the central recess portion 316. The flared portion 315 is generally trumpet-shaped and includes a bottom planar bottom surface 315a and two opposing sloped side surfaces 315b. The flat bottom surface 315a extends from the upper edge of the central recess 316 to the inclined side surface 315b, i.e. two opposite inclined side surfaces 315b intersect the flat bottom surface 315a, the inclined side surfaces 315b extending upwardly to intersect the top surface of the first component 300.

As shown in fig. 3C, the cross-section of the central recess 316 is configured as a circular arc for receiving the first conduit section 210 and a portion of the second conduit section 220. In the illustrated embodiment, the diameter D1 of the central recess 316 is greater (preferably slightly greater) than the diameter of the medical catheter 200 in order to receive the medical catheter 200. In some embodiments, however, the diameter D1 of the central depression 316 may also be set equal to the diameter of the medical catheter 200.

In the illustrated embodiment, central angle α of central depression 316 is greater than 180 degrees. That is, the upper opening of the central depression 316 is smaller in size than the diameter of the medical catheter 200, thereby creating a crimping effect. The smaller upper opening of the medical catheter 200 can prevent the medical catheter 200 from exiting the central depression 316 to some extent after the medical catheter 200 is pressed into the central depression 316. The angle of the central angle α should not be too large, otherwise it would make it difficult for the medical catheter 200 to be snapped into the central depression 316. Through the inventor test, when the central angle alpha is greater than 180 degrees and less than or equal to 230 degrees, the medical catheter 200 can be relatively easily clamped into the central concave part 316, and the medical catheter 200 can be effectively prevented from falling out of the central concave part 316.

The shape and size of the flared portion 315 may be flexibly set as desired, preferably with a more gradual opening, to provide a more comfortable gripping feel for the palm of the operator. In addition, the flared portion 315 provides comfort to the operator's fingers when pressing the corresponding portion of the medical catheter into the first slot 310. In order to fully receive the medical catheter 200 within the first slot 310, the depth of the first slot 310 is required to be equal to or greater than the diameter of the medical catheter 200, preferably 1.0 to 1.5 times the diameter of the medical catheter 200, and more preferably 1.1 to 1.5 times the diameter of the medical catheter to provide a comfortable grip feel. In some embodiments, the first slot 310 may also be configured to include only the central depression 316.

As described above, since the connector 250 connecting the first tube segment 210 and the second tube segment 220 has the flange 252, in order to enable the right side portions of the corresponding first tube segment 210 and second tube segment 220 of the medical tube 200 to be stably received in the first groove 310, the first assembly 300 is further provided with the first insertion groove 311 perpendicular to the first groove 310 and recessed from the first groove 310. The diameter of the first slot 311 is preferably equal to or slightly greater than the outer diameter of the flange 252 and the width is preferably equal to or slightly greater than the width of the flange 252 to more stably receive the flange 252 within the first slot 311 and limit longitudinal movement of the medical catheter within the first slot 310.

Because it is desirable to effect the breaking of frangible member 240 by bending second conduit segment 220, first slot 311 is preferably positioned near first end 301 of first assembly 300 such that a larger portion of second conduit segment 220 is located outside of first slot 310, facilitating the bending of second conduit segment 220 by swinging first assembly 300, thereby causing frangible tip 243b within second conduit segment 220 to bend relative to segment 243 a.

In the case where the diameter of the central depression 316 is larger than that of the medical catheter 200, in order to stably clamp the medical catheter 200 during bending of the frangible member 240, the surface of the first groove 310 (specifically, the surface of the central depression 316) is further provided with a first tube clamping protrusion 312 (fig. 3a,3 c).

In the embodiment shown in fig. 3A, the first tube clamping projection 312 includes two projections 312a,312b disposed opposite each other, each formed in the form of circular arc segments protruding radially from the surface of the central recess 316. The two protrusions 312a,312b are preferably located near respective upper edges of the central recess 316. Each projection 312a,312b protrudes from the surface of the central depression 316 by a height of 0.3 to 0.7mm, a length L1 (see fig. 3C) of 2.0 to 4.0mm, a width W1 (see fig. 3D) of 1.0 to 2.0mm, or a central angle of 34 degrees to 72 degrees (i.e., 34 degrees or more and 72 degrees or less).

Along the longitudinal direction X ₁ of the first component 300, the first tube gripping protrusion 312 is preferably positioned closer to the first end 301 than the first socket 311 to form an effective grip on the medical catheter 200 at the first end 301 of the first component 300, improving the stability of the bending operation.

In the embodiment shown in fig. 3A, the surface of the central recess 316 of the first groove 310 may be further provided with additional first tube clamping protrusions 313, 314 to stably clamp the first tube segment 210 received in the central recess 316 at a plurality of positions in the longitudinal direction X ₁ of the first assembly 300. Additional first tube gripping protrusions 313, 314 are located between the first socket 311 and the second end 302, which are spaced apart in the longitudinal direction X ₁. An additional first tube gripping protrusion 314 is preferably disposed adjacent the second end 302 to tightly grip the medical catheter adjacent the second end 302.

In the illustrated embodiment, the additional first tube gripping protrusions 313, 314 have the same size and shape as the first tube gripping protrusion 312. The tube gripping protrusions 312, 313, 314 may be different from one another to accommodate differently configured medical catheters. For example, where the medical catheter received within the central recess 316 includes a plurality of tube segments of different diameters, the protrusions 312, 313, 314 may also be correspondingly positioned in corresponding locations for the respective tube segments and protruding by corresponding dimensions relative to the central recess 316.

As shown in fig. 3A, 3D, 3E, the diameter of the first groove 310 at the first end 301 and/or the second end 302 may be smaller than the diameter of the portion between the first end 301 and the second end 302 such that the first groove 310 can exert a greater clamping force on the medical catheter 200 at least one end of the smaller diameter.

Fig. 4A-4E illustrate a second assembly 400 of a device for breaking a frangible member engaged with a medical catheter according to one embodiment of the present application. The second assembly 400 is configured to receive a portion of the second catheter section 220 and the third catheter section 230 of the medical catheter 200.

As shown in fig. 4A and 4B, the second assembly 400 is formed as a rod having a generally C-shaped cross-section with a first end 401 and an opposite second end 402, the diameter of the rod preferably being greater than 26mm and less than or equal to 40mm. The length L02 (see fig. 4C) of the second assembly 400 is preferably 30mm to 40mm, inclusive. The second assembly 400 includes a second slot 410, the second slot 410 being formed in the top of the second assembly 400 extending along a longitudinal axis X ₂ of the second assembly 400 from the first end 401 to the second end 402 thereof.

Referring to fig. 4B, the second slot 410 has a circular arc shape in cross-section with a diameter greater than the diameter of the medical catheter 200 so as to receive the medical catheter 200 in a generally cylindrical shape. In some embodiments, the diameter of the second groove 410 may also be equal to the diameter of the medical catheter 200.

In order to facilitate stable retention of the medical catheter 200 within the second groove 410, the central angle β of the second groove 410 may also be set to be greater than 180 degrees, preferably less than or equal to 230 degrees. In some embodiments, the central angle α of the first slot 310 is greater than the central angle β of the second slot 410.

In the illustrated embodiment, the second assembly 400 is further provided with a second slot 411, the second slot 411 being perpendicular to the second slot 410 and recessed from the second slot 410. The second slot 411 is disposed adjacent the first end 401 and has a width equal to or slightly greater than the flange 242 of the frangible member 240 between the second tube segment 220 and the third tube segment 230 for receiving the flange 242 and defining the longitudinal position of the flange 242 within the second slot 411. For frangible members without flanges, the second slot 411 may not be provided in the second slot 410.

In addition, in order for the medical catheter 200 to be stably received in the second groove 410, the surface of the second groove 410 is provided with a convex second tube clamping protrusion 412. In the illustrated embodiment, the second tube clamping projection 412 includes two projections 412a,412b shaped as circular arc segments disposed opposite each other, with the two projections 412a,412b being located near respective upper edges of the second slot 410. The protrusions 412a,412B respectively protrude from the surface of the second groove 410 in the radial direction by a height of 0.3 to 0.7mm, a length L2 (see fig. 4B) of 2.0 to 4.0mm, a width W2 (see fig. 4C) of 1.0 to 2.0mm, or a central angle of 34 degrees to 72 degrees (i.e., 34 degrees or more and 72 degrees or less). The second tube clamping projection 412 is located closer to the first end 401 of the second assembly 400 than the second slot 411 in the longitudinal direction X ₂.

Those skilled in the art will appreciate that in embodiments where the diameter of the second groove 410 is equal to the diameter of the medical catheter 200, the second tube gripping protrusion may not be provided and only rely on the surface of the second groove 410 to achieve a tight grip on the medical catheter.

Similar to the first component 300, the second component 400 may also have at least one weight-reducing aperture or groove 440. As shown in fig. 4D and 4E, the weight-reducing groove 440 may be formed as a recess having a generally C-shaped cross-section recessed from an end face of the second end 402 of the second assembly 400, which may extend in the direction of the longitudinal axis X ₂ to proximate the first end 401 but not through the first end 401. It will be appreciated that in other embodiments, other forms of lightening holes or lightening grooves may be formed in the second component 400, so long as the distribution of the lightening holes or lightening grooves does not affect the functional implementation of the second component 400.

In the illustrated embodiment, the first assembly 300 and the second assembly 400 are two separate components. In some embodiments, a connector (not shown) may be provided that connects the first assembly 300 and the second assembly 400 to prevent an operator from inadvertently losing one of them. The connection member may be, for example, a string having both ends fixed to the first and second assemblies 300 and 400, respectively. Or the connection member may be configured as a member that magnetically connects the first assembly 300 and the second assembly 400. For example, a first magnetic element may be mounted on the first assembly 300 and a second magnetic element may be mounted on the second assembly 400, the two magnetic elements being magnetically attracted to each other to attract the first and second assemblies together. The magnitude of the magnetic engaging force of the two magnetic members can be properly selected so that the magnetic engaging force can engage both components without impeding the user to separate and use the two components.

The process of breaking frangible member 240 using the apparatus of the present application will be described below in connection with fig. 2.

In use, the first end 301 of the first component 300 is opposed to the first end 401 of the second component 400, with the top surfaces of the first component 300 and the second component 400 facing upward. The first catheter segment 210 (not shown) and a portion of the second catheter segment 220 are snapped into the first slot 310 of the first assembly 300 such that the flange 252 snaps into the first slot 311, a portion of the second catheter segment 220 and the third catheter segment 230 (not shown) are snapped into the second slot 410 of the second assembly 400 such that the flange 242 of the frangible member 240 snaps into the second catch 411, thereby receiving the corresponding portion of the medical catheter 200 within the first slot 310 and the second slot 410, while a majority of the middle of the second catheter segment 220, in which the frangible tip 243b of the frangible member 240 is disposed, is located in the space between the first assembly 300 and the second assembly 400.

Next, the operator holds the first and second assemblies 300 and 400, respectively, with both hands such that the first assembly 300 is reciprocally swung at an angle with respect to the second assembly 400 in the direction of the illustrated arrow. The swinging of the first assembly 300 relative to the second assembly 400 causes the second conduit segment 220 to bend accordingly, the frangible tip 243b being compressed by the wall of the second conduit segment 220 being bent to receive a bending force, resulting in a stress concentration in the weakened area, thereby breaking the frangible tip 243b.

The first assembly 300 may oscillate reciprocally in the same plane with respect to the second assembly 400. In some cases, such as when an operator's hand presses the medical catheter from the top of the first assembly 300, the first assembly 300 may also be rotated in any direction relative to the second assembly 400, so long as the second catheter section 220 is capable of being bent and thereby breaking the frangible member 240.

Alternatively, the second component may be omitted and the frangible member 240 broken by directly pinching the flange 242 or left tube portion 241 of the frangible member 240 with one hand and holding the first component 300 with the other hand and oscillating it back and forth with respect to the frangible member 240. And will not be described in detail herein.

The discussion herein includes a number of illustrative figures showing various example portions or components of a device for breaking a frangible member within a medical catheter. In the interest of clarity, not all aspects of each example component are shown in the figures. Any example component and/or method provided herein may share any or all features with any or all other components and/or methods provided herein.

Various embodiments have been described herein with reference to the accompanying drawings. It will, however, be evident that various modifications and changes may be made thereto, and additional embodiments may be implemented, without departing from the broader scope of the utility model as set forth in the appended claims. Furthermore, other embodiments will be apparent to those skilled in the art from consideration of the specification and practice of one or more embodiments of the utility model disclosed herein. It is therefore intended that the utility model and embodiments herein be considered as exemplary only, with the true scope and spirit of the utility model being indicated by the following list of exemplary claims.

Claims (25)

1. A device for breaking a frangible member engaged with a medical catheter, wherein the medical catheter comprises a first catheter section and a second catheter section, the first catheter section and the second catheter section being interconnected by a connector having a first flange, the frangible member being engaged with the second catheter section,

Wherein the device comprises a first assembly having a first end and a second end opposite the first end, the first assembly comprising:

A first slot formed in a top portion of the first assembly and extending in a longitudinal direction of the first assembly from a first end of the first assembly to a second end thereof, the first slot for receiving a first conduit section and a portion of a second conduit section;

A first slot formed perpendicular to and recessed from the first slot, wherein the first slot is proximate to the first end of the first component and is configured to receive the first flange; and

A first tube grip tab projecting from a surface of the first slot, the first tube grip tab being positioned closer to the first end of the first assembly than the first slot.

2. The device of claim 1, wherein the first component is formed as an elongated handle comprising a front face having a palm-receiving recess for receiving an operator's palm and a rear face having a plurality of finger-receiving recesses for receiving operator's fingers.

3. The device of claim 1 or 2, wherein the first groove comprises a central recess and a flared portion, the flared portion being connected to the central recess, wherein the central recess is configured to receive the first tube segment and a portion of the second tube segment.

4. A device according to claim 3, wherein the flared portion comprises a planar bottom surface extending from an upper edge of the central recess and two opposing inclined sides intersecting the planar bottom surface.

5. A device according to claim 3, wherein the depth of the first groove is 1.1 to 1.5 times the diameter of the medical catheter.

6. A device according to claim 3, wherein the central recess has a circular arc-shaped cross section, the diameter of the central recess being greater than the diameter of the medical catheter.

7. The device of claim 6, wherein the central recess has a central angle greater than 180 degrees and less than or equal to 230 degrees.

8. The device of claim 6, further comprising at least one additional first tube gripping protrusion protruding from a surface of the central recess, wherein each additional first tube gripping protrusion is located between the first slot and the second end of the first assembly.

9. The device of claim 6, wherein the first tube gripping protrusion comprises two arcuate segments disposed opposite each other, each arcuate segment protruding radially from a surface of the central depression by 0.3 to 0.7mm and having a length of 2.0 to 4.0 mm.

10. The device of claim 6, wherein the first tube gripping protrusion comprises two arcuate segments disposed opposite each other, each of the arcuate segments protruding radially from the surface of the central depression by 0.3 to 0.7mm and having a central angle of 34 degrees to 72 degrees.

11. The device of any one of claims 9 to 10, wherein the first tube gripping protrusion has a width of 1.0 to 2.0 mm.

12. The device of claim 1 or 2, wherein the first component comprises a plurality of weight-reducing grooves or holes.

13. The device of claim 1, wherein the medical catheter further comprises a third catheter section, the second catheter section and the third catheter section being interconnected by the frangible member, wherein the frangible member has a second flange;

The device further includes a second assembly having a first end and a second end opposite the first end, the second assembly comprising:

A second slot formed in a top portion of the second assembly and extending from a first end of the second assembly to a second end thereof;

a second slot formed perpendicular to and recessed from the second slot, the second slot being proximate the first end of the second assembly and configured to receive the second flange; and

A second tube grip tab projecting from a surface of the second slot, the second tube grip tab being positioned closer to the first end of the second assembly than the second slot.

14. The device of claim 13, wherein the second component is formed as a rod having a C-shaped cross-section.

15. The device of claim 14, wherein the rod has a diameter greater than 26mm and less than or equal to 40mm.

16. The device of any one of claims 13 to 15, wherein the second groove has a circular arc-shaped cross section, the diameter of the second groove being greater than the diameter of the medical catheter.

17. The device of claim 16, wherein the central angle of the second slot is greater than 180 degrees and less than or equal to 230 degrees.

18. The device of any one of claims 13 to 15, wherein the second tube clamping projection comprises two circular arc segments disposed opposite each other, each circular arc segment protruding radially from a surface of the second groove by 0.3 to 0.7mm and having a length of 2.0 to 4.0 mm.

19. The device of any one of claims 13 to 15, wherein the second tube clamping projection comprises two circular arc segments disposed opposite each other, each of the circular arc segments protruding radially from the surface of the second slot by 0.3 to 0.7mm and having a central angle of 34 degrees to 72 degrees.

20. The device of claim 18, wherein the second tube gripping protrusion has a width of 1.0 to 2.0 mm.

21. The device of any one of claims 13 to 15, wherein the second component comprises at least one weight-reducing groove or hole.

22. The device according to any of claims 13 to 15, wherein the first component has a length of 100mm to 130mm and/or the second component has a length of 30mm to 40mm, the range of lengths comprising the end point values.

23. The apparatus of any one of claims 13 to 15, further comprising a connector configured to connect the first component and the second component.

24. The device of claim 23, wherein the connector is formed as a string, both ends of the string being secured to the first and second components, respectively.

25. The apparatus of claim 24, wherein the connector comprises a first magnetic member and a second magnetic member configured to magnetically engage each other, wherein the first magnetic member is mounted to the first assembly and the second magnetic member is mounted to the second assembly.