CN219558400U - Combined deep vein catheter - Google Patents

Abstract

The utility model belongs to the field of deep vein catheters, in particular to a combined deep vein catheter which comprises a connecting pipe, an insertion pipe and a connecting terminal; an inserting pipe is arranged at the bottom end of the connecting pipe, a connecting terminal is arranged between the connecting pipe and the inserting pipe, and an upper connecting mechanism is arranged between the connecting terminal and the connecting pipe; go up coupling mechanism and include adapter sleeve, connecting block, spread groove, seal assembly and auxiliary fixation subassembly, adapter sleeve fixed connection is in the inside position department that is close to the top of connecting terminal, connecting block fixed connection is in the outside of adapter sleeve, and the connecting block is medical grade silica gel material, the bottom at the connecting pipe inner wall is seted up to the spread groove, and spread groove and connecting block, seal assembly sets up between connecting pipe and connecting terminal, auxiliary fixation subassembly sets up between the bottom in the connecting pipe outside and connecting terminal inner wall, has realized conveniently taking down the function of retrieving the connecting pipe through last coupling mechanism.

Description

Combined deep vein catheter

Technical Field

The utility model relates to the field of deep vein catheters, in particular to a combined deep vein catheter.

Background

When rescuing or major surgery is performed on a patient, the conditions such as medication, blood drawing and assay are generally detected by adopting a method of placing a deep vein catheter, so that the success rate of rescuing and the success rate of surgery on the patient can be effectively improved.

A deep vein catheter is a means of introducing a catheter into a deep large vein or central vein through a shallower vein.

The existing deep vein catheters are mainly designed to be integrated, and the catheters are discarded after being used once, but the parts of the catheters which are not inserted into the body can be reused in practice, so that great waste is caused; accordingly, a combination deep vein catheter is proposed to address the above-mentioned problems.

Disclosure of Invention

In order to make up for the defects of the prior art, the prior deep vein catheter is mainly designed as an integrated catheter which is discarded after being used once, but the part of the catheter which is not inserted into the body can be reused in practice, so that the problem of great waste is caused.

The technical scheme adopted for solving the technical problems is as follows: the utility model relates to a combined deep vein catheter, which comprises a connecting pipe, an insertion pipe and a connecting terminal; an inserting pipe is arranged at the bottom end of the connecting pipe, a connecting terminal is arranged between the connecting pipe and the inserting pipe, and an upper connecting mechanism is arranged between the connecting terminal and the connecting pipe;

go up coupling mechanism and include adapter sleeve, connecting block, spread groove, seal assembly and auxiliary fixation subassembly, adapter sleeve fixed connection is in the inside position department that is close to the top of connecting terminal, connecting block fixed connection is in the outside of adapter sleeve, and the connecting block is medical grade silica gel material, the bottom at the connecting pipe inner wall is seted up to the spread groove, and spread groove and connecting block, seal assembly sets up between connecting pipe and connecting terminal, auxiliary fixation subassembly sets up between the bottom in the connecting pipe outside and connecting terminal inner wall, through last coupling mechanism's structural design, has realized conveniently taking down the function of retrieving with the connecting pipe.

Preferably, the seal assembly comprises an inner seal ring, a bottom seal ring and an outer seal ring, wherein the inner seal ring is sleeved on the outer side of the connecting sleeve, which is close to the top end position, and the inner seal ring is tightly attached to the inner wall of the connecting pipe, the bottom seal ring is glued at the bottom end of the connecting pipe, and is tightly attached to the inner wall of the connecting terminal, the outer seal ring is glued at the bottom end of the outer side of the connecting pipe, and the outer side of the outer seal ring is tightly attached to the inner wall of the connecting terminal, so that the effect of enhancing the tightness between the connecting pipe and the connecting terminal is achieved through the effect of the seal assembly.

Preferably, the inner sealing ring, the bottom sealing ring and the outer sealing ring are all made of medical grade silica gel materials, and the medical grade silica gel materials have the characteristics of no irritation, no toxicity, no anaphylactic reaction and little organism rejection reaction to human tissues.

Preferably, the auxiliary fixing component comprises a positioning block and a positioning groove, the positioning block is glued on two sides, close to the bottom end, of the outer wall of the connecting pipe, the positioning block is made of medical grade silica gel, the positioning groove is formed in two sides, close to the top end, of the inner wall of the connecting terminal, the positioning groove is clamped with the positioning block, and the auxiliary fixing component is used for reinforcing connection between the connecting pipe and the connecting terminal.

Preferably, be provided with coupling mechanism down between connecting terminal and the insert tube, coupling mechanism includes spacer sleeve, main sealing washer, vice sealing washer and locating component down, spacer sleeve fixed connection is close to the position department in center at the connecting terminal inner wall, main sealing washer snare is established in the outside of spacer sleeve, and the outside of main sealing washer closely laminates with the inner wall of insert tube, vice sealing washer is glued on the top of insert tube, and vice sealing washer closely laminates with connecting terminal's inner wall, main sealing washer and vice sealing washer are medical grade silica gel material all, locating component sets up the bottom at connecting terminal, has realized the function of conveniently connecting between insert tube and the connecting terminal with different length through coupling mechanism down.

Preferably, the locating component includes screw thread area, friction pad and nut, the outside at the inserted tube is established to the screw thread area cover, and the top of screw thread area and connecting terminal's bottom fixed connection, the friction pad is glued in the outside of inserted tube, and the friction pad is the rubber material, nut threaded connection is in the outside of screw thread area, plays the fixed effect of connecting piece between connecting terminal and the inserted tube through the locating component.

The utility model has the advantages that:

1. the utility model realizes the function of conveniently taking down and recycling the connecting pipe through the structural design of the upper connecting mechanism, when the connecting pipe and the connecting terminal are to be connected, the end part of the connecting pipe is inserted into the connecting terminal, and when the connecting pipe and the connecting terminal are to be released, the connecting pipe is reversely operated, thereby solving the problems that the existing deep vein catheter is mainly designed into an integral type, the catheter is discarded after being used once, but the part of the catheter which is not inserted into the body can be reused in practice, and the great waste is caused;

2. the utility model realizes the function of conveniently connecting the insertion pipes with different lengths with the connecting terminals through the structural design of the lower connecting mechanism, when the connecting terminals are to be replaced, the nut is only required to be unscrewed, then the insertion pipe is pulled in the direction away from the connecting terminals, when the insertion pipe is required to be connected with the connecting terminals, the reverse operation is only required, the problems of fixed length of the existing deep intravenous catheter, and when patients need to use catheters with different lengths, the replacement of the whole catheter is required, which is troublesome and inconvenient are solved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a partial sectional structure in a top view of a first embodiment;

FIG. 2 is an enlarged schematic view of the structure A in FIG. 1 according to the first embodiment;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2B according to the first embodiment;

FIG. 4 is an enlarged schematic view of the structure of FIG. 2C according to the first embodiment;

fig. 5 is a schematic structure of a partial top view section of the second embodiment.

In the figure: 1. a connecting pipe; 2. an insertion tube; 3. a connection terminal; 41. connecting sleeves; 42. an inner seal ring; 43. a connecting block; 44. a connecting groove; 45. a bottom seal ring; 46. a positioning block; 47. a positioning groove; 48. an outer seal ring; 51. a positioning sleeve; 52. a main seal ring; 53. an auxiliary sealing ring; 54. a threaded belt; 55. a friction pad; 56. a nut; 57. an anti-skid sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1 to 4, a combined deep vein catheter includes a connection tube 1, an insertion tube 2 and a connection terminal 3; an insertion tube 2 is arranged at the bottom end of the connecting tube 1, a connecting terminal 3 is arranged between the connecting tube 1 and the insertion tube 2, and an upper connecting mechanism is arranged between the connecting terminal 3 and the connecting tube 1;

the upper connecting mechanism comprises a connecting sleeve 41, a connecting block 43, a connecting groove 44, a sealing component and an auxiliary fixing component, wherein the connecting sleeve 41 is fixedly connected to the position, close to the top end, inside the connecting terminal 3, of the connecting sleeve 41, the connecting block 43 is fixedly connected to the outer side of the connecting sleeve 41, the connecting block 43 is made of medical grade silica gel, the connecting groove 44 is formed in the bottom end of the inner wall of the connecting pipe 1, the connecting groove 44 is clamped with the connecting block 43, the sealing component is arranged between the connecting pipe 1 and the connecting terminal 3, and the auxiliary fixing component is arranged between the bottom end of the outer side of the connecting pipe 1 and the inner wall of the connecting terminal 3;

during operation, when the connecting pipe 1 and the connecting terminal 3 are to be connected, the connecting pipe 1 is firstly inserted into the connecting terminal 3, the connecting sleeve 41 is synchronously inserted into the connecting pipe 1 when the connecting pipe 1 is inserted into the connecting terminal 3, at the moment, the inner wall of the connecting pipe 1 extrudes the connecting block 43, the connecting block 43 made of medical grade silica gel material is elastically deformed, when the connecting pipe 1 is inserted to the limit, the extrusion force of the inner wall of the connecting pipe 1 to the connecting block 43 disappears, at the moment, the connecting block 43 returns to the original position under the action of the self reducing force and is clamped with the connecting groove 44, the connecting pipe 1 is fixed, the connecting terminal 3 is connected, and the connecting pipe 1 and the connecting terminal 3 are reversely operated when the connecting pipe 3 is to be disconnected.

The sealing assembly comprises an inner sealing ring 42, a bottom sealing ring 45 and an outer sealing ring 48, wherein the inner sealing ring 42 is sleeved on the outer side of the connecting sleeve 41, which is close to the top end, the inner sealing ring 42 is tightly attached to the inner wall of the connecting pipe 1, the bottom sealing ring 45 is glued at the bottom end of the connecting pipe 1, the bottom sealing ring 45 is tightly attached to the inner wall of the connecting terminal 3, the outer sealing ring 48 is glued at the bottom end of the outer side of the connecting pipe 1, and the outer side of the outer sealing ring 48 is tightly attached to the inner wall of the connecting terminal 3;

when the connecting sleeve is used, after the connecting sleeve 1 is connected with the connecting terminal 3, the inner sealing ring 42 sleeved outside the connecting sleeve 41 is tightly attached to the inner wall of the connecting sleeve 1, gaps between the connecting sleeve 41 and the inner wall of the connecting sleeve 1 are filled, the sealing performance of the connecting part between the connecting sleeve 41 and the connecting sleeve 1 is enhanced, meanwhile, the bottom sealing ring 45 is abutted against the inner wall of the connecting terminal 3 to fill the gaps between the connecting sleeve 1 and the inner wall of the connecting terminal 3, the sealing performance of the connecting part between the connecting sleeve 1 and the connecting terminal 3 is enhanced, the outer side of the outer sealing ring 48 is tightly attached to the inner wall of the connecting terminal 3, and the sealing performance of the connecting part between the connecting sleeve 1 and the connecting terminal 3 is further enhanced.

The inner seal ring 42, the bottom seal ring 45 and the outer seal ring 48 are all made of medical grade silica gel.

The auxiliary fixing assembly comprises a positioning block 46 and a positioning groove 47, the positioning block 46 is glued on two sides, close to the bottom end, of the outer wall of the connecting pipe 1, the positioning block 46 is made of medical grade silica gel, the positioning groove 47 is formed on two sides, close to the top end, of the inner wall of the connecting terminal 3, and the positioning groove 47 is clamped with the positioning block 46;

when the connecting pipe 1 is inserted into the connecting terminal 3, the inner wall of the connecting terminal 3 extrudes the positioning block 46, so that the positioning block 46 elastically deforms, when the connecting pipe 1 is completely inserted into the connecting terminal 3, the extrusion force of the inner wall of the connecting terminal 3 to the positioning block 46 disappears, and at the moment, the positioning block 46 is restored to the original state under the action of the self-reducing force and is clamped with the positioning groove 47, so that the connecting pipe 1 and the connecting terminal 3 are further fixed.

A lower connecting mechanism is arranged between the connecting terminal 3 and the inserting tube 2 and comprises a positioning sleeve 51, a main sealing ring 52, an auxiliary sealing ring 53 and a positioning component, wherein the positioning sleeve 51 is fixedly connected to the position, close to the center, of the inner wall of the connecting terminal 3, the main sealing ring 52 is sleeved on the outer side of the positioning sleeve 51, the outer side of the main sealing ring 52 is tightly attached to the inner wall of the inserting tube 2, the auxiliary sealing ring 53 is glued on the top end of the inserting tube 2, the auxiliary sealing ring 53 is tightly attached to the inner wall of the connecting terminal 3, the main sealing ring 52 and the auxiliary sealing ring 53 are made of medical grade silica gel, and the positioning component is arranged at the bottom end of the connecting terminal 3;

during operation, when the insertion tube 2 and the connecting terminal 3 are to be connected, the connecting terminal 3 is firstly inserted into the insertion tube 2, when the connecting terminal 3 is inserted into the limit, the positioning sleeve 51 is sleeved into the insertion tube 2, the main sealing ring 52 is tightly attached to the inner wall of the connecting terminal 3, gaps between the positioning sleeve 51 and the inner wall of the insertion tube 2 are filled, the tightness between the insertion tube 2 and the connecting terminal 3 is enhanced, meanwhile, the auxiliary sealing ring 53 arranged at the top end of the insertion tube 2 is extruded by the insertion tube 2 and is tightly attached to the inner wall of the connecting terminal 3, and the tightness of the connecting position of the insertion tube 2 and the connecting terminal 3 is further enhanced.

The positioning assembly comprises a threaded belt 54, a friction pad 55 and a nut 56, wherein the threaded belt 54 is sleeved on the outer side of the insertion tube 2, the top end of the threaded belt 54 is fixedly connected with the bottom end of the connecting terminal 3, the friction pad 55 is glued on the outer side of the insertion tube 2, the friction pad 55 is made of rubber, and the nut 56 is in threaded connection with the outer side of the threaded belt 54;

in operation, when the connecting terminal 3 is inserted to the limit, the nut 56 is screwed down, the threaded belt 54 glued on the inner wall of the friction pad 55 is tightly attached to the outer side of the insertion tube 2, the friction force between the friction pad 55 and the insertion tube 2 is increased, the insertion tube 2 is fixed by the friction force, and when the connecting terminal 3 is to be removed, the reverse operation is performed.

Example two

Referring to fig. 5, in a first comparative example, as another embodiment of the present utility model, an anti-slip sleeve 57 is glued on the outer side of the nut 56, and the anti-slip sleeve 57 is made of rubber; in operation, the friction force is increased by the anti-slip sleeve 57 made of rubber, so that the nut 56 is prevented from slipping due to too small friction force when rotated.

Working principle: when the connecting tube 1 and the connecting terminal 3 are to be connected, the connecting tube 1 is firstly inserted into the connecting terminal 3, the connecting sleeve 41 is synchronously inserted into the connecting tube 1 when the connecting tube 1 is inserted into the connecting terminal 3, at the moment, the inner wall of the connecting tube 1 extrudes the connecting tube 43, so that the connecting tube 43 made of medical grade silica gel material is elastically deformed, when the connecting tube 1 is inserted to the limit, the extrusion force of the inner wall of the connecting tube 1 to the connecting tube 43 disappears, at the moment, the connecting tube 43 is restored to the original position under the action of the self reducing force and is clamped with the connecting groove 44, the effect of fixing the connecting tube 1 to connect the connecting tube 1 and the connecting terminal 3 is achieved, and when the connection between the connecting tube 1 and the connecting terminal 3 is to be released, the reverse operation is only needed.

After connecting between connecting pipe 1 and connecting terminal 3, the cover is established in the inner sealing washer 42 of adapter sleeve 41 outside and is closely laminated with the inner wall of connecting pipe 1, fills the gap between adapter sleeve 41 and the inner wall of connecting pipe 1, strengthens the leakproofness of junction between adapter sleeve 41 and connecting pipe 1, and the bottom sealing washer 45 also fills the gap between connecting pipe 1 and connecting terminal 3 inner wall with the inner wall butt of connecting terminal 3 simultaneously, strengthens the leakproofness of junction between connecting pipe 1 and connecting terminal 3, and the outside of outer sealing washer 48 closely laminates with the inner wall of connecting terminal 3, further strengthens the leakproofness of junction between connecting pipe 1 and connecting terminal 3.

When the connecting terminal 3 is to be connected with the insertion tube 2, the connecting terminal 3 is firstly inserted into the insertion tube 2, when the connecting terminal 3 is inserted into the limit, the positioning sleeve 51 is sleeved into the insertion tube 2, the main sealing ring 52 is tightly attached to the inner wall of the connecting terminal 3, gaps between the positioning sleeve 51 and the inner wall of the insertion tube 2 are filled, the tightness between the insertion tube 2 and the connecting terminal 3 is enhanced, meanwhile, the auxiliary sealing ring 53 arranged at the top end of the insertion tube 2 is pressed by the insertion tube 2 and tightly attached to the inner wall of the connecting terminal 3, and the tightness of the connecting part of the insertion tube 2 and the connecting terminal 3 is further enhanced.

When the connection terminal 3 is inserted to the limit, the nut 56 is tightened to tightly attach the screw band 54 adhered to the inner wall of the friction pad 55 to the outside of the insertion tube 2, thereby increasing the friction force between the friction pad 55 and the insertion tube 2, fixing the insertion tube 2 by the friction force, and reversing the operation when the connection terminal 3 is to be removed.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims (6)

1. A combination deep vein catheter, characterized in that: comprises a connecting pipe (1), an inserting pipe (2) and a connecting terminal (3); an inserting tube (2) is arranged at the bottom end of the connecting tube (1), a connecting terminal (3) is arranged between the connecting tube (1) and the inserting tube (2), and an upper connecting mechanism is arranged between the connecting terminal (3) and the connecting tube (1);

go up coupling mechanism and include adapter sleeve (41), connecting block (43), spread groove (44), seal assembly and auxiliary fixation subassembly, adapter sleeve (41) fixed connection is in the inside position department that is close to the top of connecting terminal (3), connecting block (43) fixed connection is in the outside of adapter sleeve (41), and connecting block (43) are medical grade silica gel material, the bottom at connecting pipe (1) inner wall is seted up in spread groove (44), and spread groove (44) and connecting block (43) block, seal assembly sets up between connecting pipe (1) and connecting terminal (3), auxiliary fixation subassembly sets up between the bottom in connecting pipe (1) outside and connecting terminal (3) inner wall.

2. A combination deep intravenous catheter in accordance with claim 1 wherein: the sealing assembly comprises an inner sealing ring (42), a bottom sealing ring (45) and an outer sealing ring (48), wherein the inner sealing ring (42) is sleeved on the outer side of the connecting sleeve (41) close to the top end position, the inner sealing ring (42) is tightly attached to the inner wall of the connecting pipe (1), the bottom sealing ring (45) is glued on the bottom end of the connecting pipe (1), the bottom sealing ring (45) is tightly attached to the inner wall of the connecting terminal (3), the outer sealing ring (48) is glued on the bottom end of the outer side of the connecting pipe (1), and the outer side of the outer sealing ring (48) is tightly attached to the inner wall of the connecting terminal (3).

3. A combination deep intravenous catheter as claimed in claim 2, wherein: the inner sealing ring (42), the bottom sealing ring (45) and the outer sealing ring (48) are made of medical grade silica gel materials.

4. A combination deep intravenous catheter according to claim 3, wherein: the auxiliary fixing assembly comprises a positioning block (46) and positioning grooves (47), the positioning block (46) is glued on two sides, close to the bottom end, of the outer wall of the connecting pipe (1), the positioning block (46) is made of medical-grade silica gel, the positioning grooves (47) are formed in two sides, close to the top end, of the inner wall of the connecting terminal (3), and the positioning grooves (47) are clamped with the positioning block (46).

5. The combination deep vein catheter of claim 4, wherein: the connecting terminal comprises a connecting terminal body and is characterized in that a lower connecting mechanism is arranged between the connecting terminal body and an inserting tube (2), the lower connecting mechanism comprises a locating sleeve (51), a main sealing ring (52), an auxiliary sealing ring (53) and a locating component, the locating sleeve (51) is fixedly connected to the inner wall of the connecting terminal body, the locating sleeve (3) is close to the center, the main sealing ring (52) is sleeved on the outer side of the locating sleeve (51), the outer side of the main sealing ring (52) is tightly attached to the inner wall of the inserting tube (2), the auxiliary sealing ring (53) is glued to the top end of the inserting tube (2), the auxiliary sealing ring (53) is tightly attached to the inner wall of the connecting terminal body, the main sealing ring (52) and the auxiliary sealing ring (53) are made of medical grade silica gel, and the locating component is arranged at the bottom end of the connecting terminal body (3).

6. The combination deep vein catheter of claim 5, wherein: the positioning assembly comprises a threaded belt (54), a friction pad (55) and a nut (56), wherein the threaded belt (54) is sleeved on the outer side of the insertion tube (2), the top end of the threaded belt (54) is fixedly connected with the bottom end of the connecting terminal (3), the friction pad (55) is glued on the outer side of the insertion tube (2), the friction pad (55) is made of rubber, and the nut (56) is in threaded connection with the outer side of the threaded belt (54).