CN114521934B - Blood flow blocking device - Google Patents
Blood flow blocking device Download PDFInfo
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- CN114521934B CN114521934B CN202210125402.9A CN202210125402A CN114521934B CN 114521934 B CN114521934 B CN 114521934B CN 202210125402 A CN202210125402 A CN 202210125402A CN 114521934 B CN114521934 B CN 114521934B
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- flow blocking
- blocking device
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 55
- 230000017531 blood circulation Effects 0.000 title claims abstract description 54
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 59
- 229920003023 plastic Polymers 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 16
- 230000002439 hemostatic effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 8
- 208000027418 Wounds and injury Diseases 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 230000023597 hemostasis Effects 0.000 description 5
- 208000014674 injury Diseases 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000002440 hepatic effect Effects 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 208000032843 Hemorrhage Diseases 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 210000000683 abdominal cavity Anatomy 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 210000003815 abdominal wall Anatomy 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/122—Clamps or clips, e.g. for the umbilical cord
- A61B17/1227—Spring clips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/30—Surgical pincettes without pivotal connections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/30—Surgical pincettes without pivotal connections
- A61B2017/303—Surgical pincettes without pivotal connections with four or more legs
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Reproductive Health (AREA)
- Surgical Instruments (AREA)
Abstract
The present disclosure relates to a blood flow blocking device comprising a catheter, an inflatable member, and a grasper for compressing a blood vessel; the grasping forceps comprise at least two deformable clamping arms, one end of each clamping arm is connected with one end of the catheter, and the other end of each clamping arm can deform towards the direction of approaching to each other to jointly enclose a cavity for clamping a blood vessel or deform towards the direction of separating from each other to feed the blood vessel into the cavity; an air inlet gap communicated with the inner cavity of the catheter is formed in the clamping arm; the inflatable member is arranged at one end of the catheter far away from the grasping forceps and is used for inflating the air into the air inlet gap through the inner cavity of the catheter, so that each clamping arm deforms towards the direction close to each other under the action of air entering the air inlet gap, the blood vessels are pressed together, the blood flow blocking effect is achieved, the hemostatic process is simple, and precious time is strived for the subsequent treatment of wounded.
Description
Technical Field
The present disclosure relates to the technical field of medical devices, and in particular, to a blood flow blocking device.
Background
When the injury of deep tissues of abdominal cavity such as liver, spleen or kidney causes active hemorrhage, the wound surface of the organ needs to be effectively pressed, and arterial blood supply of the organ is blocked to effectively stop bleeding, so that time is provided for the treatment of wounded.
The hepatic portal blocking tape is one of the most commonly used blood flow blocking devices for abdominal deep tissues in clinic, when hemostasis is carried out, a section of the blocking tape is clamped by using a hemostatic forceps under the direct vision or endoscopic vision, the blocking tape is tightened after the hepatic portal is wound for one week, and the blocking tape is fixed by the hemostatic forceps or the clamp, so that the hepatic portal blood flow is blocked. However, the above-mentioned operations are complicated, and the time for rescuing the wounded person is affected.
Disclosure of Invention
To solve or at least partially solve the above technical problems, the present disclosure provides a blood flow blocking device.
The present disclosure provides a blood flow blocking device comprising a catheter, an inflatable member, and a grasper for compressing a blood vessel;
the grasping forceps comprise at least two deformable clamping arms, one end of each clamping arm is connected with one end of the catheter, and the other end of each clamping arm can deform towards the direction of approaching to each other to jointly enclose a cavity for clamping a blood vessel or deform towards the direction of separating from each other to allow the blood vessel to enter the cavity;
An air inlet gap communicated with the inner cavity of the catheter is formed in the clamping arm; the inflatable member is arranged at one end of the catheter far away from the grasping forceps, and is used for inflating the air inlet gap through the inner cavity of the catheter so as to enable each clamping arm to deform towards the direction approaching to each other under the action of air entering the air inlet gap, and the clamping arms are used for jointly compressing the blood vessel.
Optionally, the catheter comprises a first catheter section and a second catheter section connected to one end of the first catheter section;
the inflatable piece is arranged at one end of the first pipe section far away from the second pipe section; the grasping forceps are arranged at one end of the second pipe section, which is far away from the first pipe section;
The first conduit section is internally provided with a first air inlet channel which is communicated with the inflatable piece; at least two second air inlet channels are arranged in the second conduit section, and the second air inlet channels are in one-to-one correspondence with the clamping arms; the air inlet end of the second air inlet channel is communicated with the first air inlet channel, and the air outlet end of the second air inlet channel is communicated with the air inlet gap of the corresponding clamping arm.
Optionally, the radial cross-sectional area of the second air intake passage is smaller than the radial cross-sectional area of the first air intake passage.
Optionally, the clamping arm includes a flexible clamp arm and an air bag wall that can be stretched transversely along the extending direction of the flexible clamp arm;
The air bag wall is arranged on the outer side of the flexible clamp arm, and the air inlet gap is formed between the air bag wall and the flexible clamp arm.
Optionally, a bent piece elastic piece is arranged in the flexible clamp arm, and the bent piece elastic piece is arranged along the extending direction of the flexible clamp arm;
and/or one side of the flexible forceps arm, which faces the blood vessel, is made of silica gel.
Optionally, in the extending direction of the balloon wall, the balloon wall is corrugated;
and/or the air bag wall is made of plastic materials.
Optionally, the blood flow blocking device further comprises a pressure gauge for measuring the pressure inside the balloon wall; the pressure gauge is connected with the air inlet gap.
Optionally, a first valve for adjusting the flow direction of the gas in the conduit is arranged at one end of the inflatable member, which is close to the conduit.
Optionally, the blood flow blocking device further comprises an outer sheath tube, the outer sheath tube is sleeved on the periphery of the catheter and the grasping forceps, and the catheter and the grasping forceps can slide relative to the outer sheath tube in the axial direction.
Optionally, the outer sheath tube is made of plastic materials capable of being torn off.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
The blood flow blocking device provided by the disclosure comprises a catheter, an inflatable member and a grasping forceps for pressing a blood vessel; the grasping forceps comprise at least two deformable clamping arms, one end of each clamping arm is connected with one end of the catheter, and the other end of each clamping arm can deform towards the direction of approaching to each other to jointly enclose a cavity for clamping a blood vessel or deform towards the direction of separating from each other to allow the blood vessel to enter the cavity; an air inlet gap communicated with the inner cavity of the catheter is formed in the clamping arm; the inflatable member is arranged at one end of the catheter far away from the grasping forceps and is used for inflating the air into the air inlet gap through the inner cavity of the catheter, so that each clamping arm deforms towards the direction close to each other under the action of air entering the air inlet gap, and the blood vessels are pressed together. Because at least two clamping arms can be deformed towards the direction that is close to each other or is kept away from each other, the air inlet gap in the clamping arms is communicated with the inner cavity of the catheter, therefore, when the clamping arms are deformed towards the direction that is kept away from each other in the process of hemostasis operation, blood vessels can enter the cavity, then when the inflatable part inflates into the air inlet gap of the clamping arms through the inner cavity of the catheter, the clamping arms can deform towards the direction that is close to each other under the action of air in the air inlet gap, so that the blood vessels in the cavity are pressed to realize the effect of blocking blood flow, that is, the effect of blocking blood flow can be achieved only by inflating the deformable clamping arms for clamping the blood vessels, the operation process is simple, the time for blocking blood flow of wounded persons is saved, and precious time is strived for subsequent treatment of wounded persons.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural view of a blood flow blocking device according to an embodiment of the present disclosure;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1 at E;
FIG. 3 is a schematic view of a portion of a blood flow blocking device according to an embodiment of the present disclosure;
FIG. 4 is a schematic view of section C-C of FIG. 2 of a blood flow occluding device according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of a structure of a blood flow blocking device according to an embodiment of the present disclosure when a clamping arm is opened;
FIG. 6 is a schematic view of a structure of a blood flow blocking device according to an embodiment of the present disclosure when a clamping arm is closed;
Fig. 7 is a schematic view of a structure of a blood vessel grasped by a clamping arm of a blood flow blocking device according to an embodiment of the present disclosure.
Wherein, 1, the conduit; 101. a first conduit section; 102. a second conduit section; 2. a first air intake passage; 3. an outer sheath; 4. a second intake passage; 41. a radial cross-sectional area of the second intake passage; 5. a clamping arm; 51. an air bag wall; 52. a flexible clamp arm; 6. a three-way valve; 7. a first valve; 8. an inflatable member; 9. a second valve; 10. a pressure gauge; 11. a bent piece elastic member; 12. a blood vessel; 13. a cavity.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.
Referring to fig. 1 to 7, the present embodiment provides a blood flow blocking device specifically including a catheter 1, an inflatable member 8, and a grasper for pressing a blood vessel 12.
The grasping forceps comprise at least two deformable holding arms 5, one end of each holding arm 5 is respectively connected with one end of the catheter, and the other end of each holding arm 5 can deform towards the direction of approaching each other to jointly enclose a cavity 13 for holding the blood vessel 12, or deform towards the direction of separating from each other to feed the blood vessel 12 into the cavity 13.
In particular, the number of the clamping arms 5 may be two or more, and at least two clamping arms 5 are provided to facilitate clamping the blood vessel 12 in the cavity 13. Referring to fig. 7, the number of the clamp arms 5 in this blood flow shutoff device is 4. In practice, the number of the clamping arms 5 can be adjusted according to the actual requirement and the size of the blood flow blocking device, so long as the blood vessel 12 can be clamped in the cavity 13 for facilitating the subsequent blood flow blocking operation.
The clamping arm 5 is internally provided with an air inlet gap communicated with the inner cavity of the catheter 1; the inflation piece 8 is arranged at one end of the catheter 1 far away from the grasping forceps, and the inflation piece 8 is used for inflating the air inlet gap through the inner cavity of the catheter 1 so that each clamping arm 5 deforms towards the direction approaching to each other under the action of the air entering the air inlet gap to jointly compress the blood vessel 12.
For example, when the blood flow blocking operation is performed, the clamping arm 5 is first brought into a horizontal state to extend the clamping arm 5 into the injury path of the wounded person, then the clamping arm 5 is brought close to the blood vessel 12, the blood vessel 12 is made to enter the cavity 13 by deforming the clamping arm 5 in directions away from each other, finally when the blood vessel 12 is confirmed to be located in the cavity 13, the blood flow blocking device is inflated by the inflation member 8, so that gas enters the air inlet gap of the clamping arm 5 through the inner cavity of the catheter 1, and the clamping arm 5 is deformed in directions approaching each other under the action of the gas in the air inlet gap, so that the blood vessel 12 is pressed to achieve the blood flow blocking effect of the blood vessel 12.
The inflation member 8 may be an inflation ball, and a second valve 9 is disposed at one end of the inflation member 8 away from the catheter 1, so that external air enters the inflation member 8 in a unidirectional manner to inflate the inner cavity of the catheter 1.
Through the above technical solution, the blood flow blocking device provided in this embodiment is provided with the catheter 1, the inflatable member 8 and the grasping forceps for pressing the blood vessel 12; the grasping forceps comprise at least two deformable clamping arms 5, one end of each clamping arm 5 is respectively connected with one end of the catheter 1, and the other end of each clamping arm 5 can deform towards the direction of approaching to each other to jointly enclose a cavity 13 for clamping the blood vessel 12, or deform towards the direction of separating from each other to allow the blood vessel 12 to enter the cavity 13; the clamping arm 5 is internally provided with an air inlet gap communicated with the inner cavity of the catheter 1; the inflation piece 8 is arranged at one end of the catheter 1 far away from the grasping forceps, and the inflation piece 8 is used for inflating the air inlet gap through the inner cavity of the catheter 1 so that each clamping arm 5 deforms towards the direction approaching to each other under the action of the air entering the air inlet gap to jointly compress the blood vessel 12. Because at least two clamping arms 5 can be deformed towards the direction of approaching each other or keeping away from each other, and the air inlet gap in the clamping arms 5 is communicated with the inner cavity of the catheter 1, when each clamping arm 5 is deformed towards the direction of keeping away from each other in the process of hemostasis operation, the blood vessel 12 can enter the cavity 13, then when the inflatable member 8 is inflated into the air inlet gap of the clamping arms 5 through the inner cavity of the catheter 1, the clamping arms 5 can deform towards the direction of approaching each other under the action of the air in the air inlet gap, so that the blood vessel 12 in the cavity 13 is pressed to realize the effect of blocking the blood flow, that is, the effect of blocking the blood flow can be realized only by inflating the deformable clamping arms 5 clamping the blood vessel 12, the operation process is simple, the time of blocking the blood flow of wounded is saved, and precious time is strived for the subsequent treatment of the wounded.
In particular, catheter 1 comprises a first catheter section 101 and a second catheter section 102 connected to one end of first catheter section 101; the inflatable member 8 is disposed at an end of the first conduit section 101 remote from the second conduit section 102; the grasping forceps are arranged at one end of the second pipe section 102 far away from the first pipe section 101; the first conduit section 101 is internally provided with a first air inlet channel 2, and the first air inlet channel 2 is communicated with the inflatable member 8; the second conduit section 102 is internally provided with at least two second air inlet channels 4, and the second air inlet channels 4 are in one-to-one correspondence with the clamping arms 5; the air inlet end of the second air inlet channel 4 is communicated with the first air inlet channel 2, and the air outlet end of the second air inlet channel 4 is communicated with the air inlet gap of the corresponding clamping arm 5.
Through setting up the second inlet channel 4 with centre gripping arm 5 one-to-one to the gas to the end of giving vent to anger of first inlet channel 2 shunts, thereby makes gas can be stable and evenly by the end of giving vent to anger of second inlet channel 4 get into in the air inlet gap, and then has improved centre gripping arm 5 to the centre gripping effect of blood vessel 12 when being close to each other's direction deformation, has carried out effectual hemostasis to blood vessel 12.
Referring to fig. 3 to 4, the radial cross-sectional area 41 of the second air inlet channel is smaller than the radial cross-sectional area of the first air inlet channel 2, so that the structure of the second pipe section 102 where the second air inlet channel 4 is located is protected on the basis of ensuring that the air uniformly enters the air inlet gap, the phenomenon that the second air inlet channel 4 bends when the air enters the air inlet gap through the second air inlet channel 4 is avoided, the structure of the second pipe section 102 during air circulation is effectively protected, the toughness and deformation resistance of the second pipe section 102 are improved, and the stability of the whole blood flow blocking device is improved, so that an injured person is effectively stopped.
In particular, the clamping arm 5 comprises a flexible clamp arm 52 and an air bag wall 51 which can be transversely stretched along the extending direction of the flexible clamp arm 52; wherein the flexible jawarms 52 reduce injury to other parts of the patient from the clamping arms 5 extending into the patient's injury path so that the clamping arms 5 can be safely placed into the injury path. In addition, the balloon wall 51 can be transversely stretched along the extending direction of the flexible clamp arm 52, so that the clamp arm 5 can deform in the direction away from each other, and the blood vessel 12 can enter the cavity 13, or the clamp arm 5 can deform in the direction close to each other, so that the blood vessel 12 in the cavity 13 is compressed, the compression effect on the blood vessel 12 is realized, and the operation process is simple. The balloon wall 51 is disposed outside the flexible forceps arms 52, wherein the flexible forceps arms 52 positioned inside the balloon wall 51 can facilitate the clamping of the blood vessel 12 by the clamping arms 5, and an air intake gap is formed between the balloon wall 51 and the flexible forceps arms 52.
Wherein, the flexible clamp arm 52 is internally provided with a bent piece elastic piece 11, and the bent piece elastic piece 11 is arranged along the extending direction of the flexible clamp arm 52; and/or, the side of the flexible forceps arm 52 facing the blood vessel 12 is made of silica gel, however, the side of the flexible forceps arm 52 facing the blood vessel 12 may be made of rubber.
The bent piece elastic piece 11 arranged in the flexible clamp arm 52 enables each clamping arm 5 to deform in a direction away from each other in a natural state (i.e. when the air inlet gap is not inflated), so that other methods, such as air suction operation on the air inlet gap of each clamping arm 5, are not needed, and each clamping arm 5 deforms in the direction away from each other; meanwhile, when the air is inflated into the air inlet gap, the bent piece elastic piece 11 is used, so that the clamping arms 5 deform towards the directions approaching to each other under the action of air in the air inlet gap to jointly press the blood vessel 12. That is, the use of the bent piece elastic member 11 facilitates the deformation of each of the clamping arms 5, and improves the stability of each of the clamping arms 5 when deformed.
It should be understood that the bending piece elastic member 11 may be a bending piece spring, or may be an elastic body such as a bending piece elastic strip or a bending piece elastic rope, so long as it can be disposed in the flexible clamp arm 52 and deform each clamp arm 5, which is not limited in this way.
In addition, the use of the silicone material increases the friction between the side of the flexible clamp arm 52 facing the blood vessel 12 and the blood vessel 12, and simultaneously reduces the pressure of the blood flow blocking device on the blood vessel 12, thereby avoiding affecting the normal hemostasis of the blood vessel 12 when the blood vessel 12 is excessively pressed.
The arrangement of the elastic piece 11 of the inner bending piece of the flexible clamp arm 52 is matched with the silica gel material of the flexible clamp arm 52 on the side facing the blood vessel 12, so that the hemostatic effect of the blood flow blocking device on the blood vessel 12 can be further improved, and more treatment time is further strived for the wounded.
Referring to fig. 2, in the extending direction of the balloon wall 51, the balloon wall 51 is corrugated; and/or, the air bag wall 51 is made of plastic, and the air bag wall 51 can be made of polyvinyl chloride plastic or polyethylene plastic. The corrugated airbag wall 51 can make the airbag wall 51 more easily realize transverse stretching during the process of inflating the air intake gap, and meanwhile, the structure of the airbag wall 51 is not damaged. The air bag wall 51 can be kept complete all the time without cracking when the air is continuously fed in the air feeding gap because the plastic has a certain capability of bearing the pressure; in addition, the elasticity of the plastic material is small, and the expansion is not easy to occur, so that the air inlet gap mainly stretches transversely in the air inlet process, and the clamping arms 5 deform towards the directions close to each other conveniently.
The corrugated air bag wall 51 is matched with the plastic material, so that the transverse stretching effect of the air bag wall 51 and the deformation effect of the whole clamping arm 5 can be further ensured, the hemostatic effect of the blood flow blocking device is further improved, the hemostatic process is simple and convenient, and more treatment time can be obtained for the wounded.
Specifically, the blood flow blocking device further comprises a pressure gauge 10 for measuring the pressure inside the balloon wall 51; the manometer 10 is connected with the air inlet gap, is convenient for carry out real-time measurement to the pressure in the air inlet gap, and the convenient operating personnel is according to the quantity of gas in the air inlet gap of the registration regulation of manometer 10, prevents that the excessive atmospheric pressure in the air inlet gap from influencing the normal clear of blood flow blocking operation, has guaranteed this blood flow blocking device's normal use.
As shown in fig. 1, the three-way valve 6 may be connected to the end of the catheter 1 away from the grasper, and the other two ends of the three-way valve 6 may be connected to the pressure gauge 10 and the inflator 8, respectively, although the pressure gauge 10 may be connected to the intake gap alone, so long as the measurement of the air pressure in the intake gap can be achieved, and no limitation is made here.
Further, one end of the inflatable member 8, which is close to the catheter 1, is provided with a first valve 7 for adjusting the gas flow direction inside the catheter 1, and the gas flow direction inside the catheter 1 can be selected by screwing the valve cap of the first valve 7, so that the normal use and the hemostatic effect of the whole blood flow blocking device are prevented from being influenced due to the occurrence of the gas backflow condition inside the catheter 1. Illustratively, when the valve cap of the first valve 7 is tightened, one-way inflation may be performed in the conduit 1, and when the valve cap of the first valve 7 is loosened, the gas in the conduit 1 may be vented.
Of course, the pressure gauge 10 and the first valve 7 may be set at the same time, that is, the pressure value inside the air intake gap measured by the pressure gauge 10 may be matched with the use of the first valve 7, so as to reliably adjust the air amount in the air intake gap, and further adjust the clamping force of the clamping arm 5 on the blood vessel 12, thereby protecting the structure of the blood flow blocking device and simultaneously playing a role of blocking blood flow to different degrees on the blood vessel 12.
In particular, since the catheter 1 and the grasper have softer textures, in order to effectively support the catheter 1 and the grasper, referring to fig. 1, the blood flow blocking device further comprises an outer sheath tube 3, the outer sheath tube 3 is sleeved on the periphery of the catheter 1 and the grasper, and the catheter 1 and the grasper can slide relative to the axial direction of the outer sheath tube 3, wherein the outer sheath tube 3 has harder textures and smooth surfaces, so that a person can conveniently and smoothly stretch the grasper into a wounded tract of a wounded person by fixing the outer sheath tube 3, and the blood flow blocking device is convenient to use.
When the grasper needs to perform blood flow blocking in the wounded body for a long time, only the grasper and the relatively soft part of the catheter 1 are kept in the body by tearing and withdrawing the outer sheath 3, and then another part of the catheter 1 positioned outside the wounded body is fixed on the abdominal wall of the wounded body by using the catheter fixer, so that the wounded body can be transported or sent back conveniently. Therefore, in practical implementation, the outer sheath 3 is made of plastic material that can be torn off.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A blood flow blocking device, characterized by comprising a catheter (1), an inflatable member (8) and a grasper for compressing a blood vessel (12);
The grasping forceps comprise at least two deformable clamping arms (5), one end of each clamping arm (5) is respectively connected with one end of the catheter (1), and the other end of each clamping arm (5) can deform towards the direction of approaching each other to jointly enclose a cavity (13) for clamping the blood vessel (12), or deform towards the direction of separating from each other to allow the blood vessel (12) to enter the cavity (13);
An air inlet gap communicated with the inner cavity of the guide pipe (1) is formed in the clamping arm (5); the inflatable piece (8) is arranged at one end of the catheter (1) far away from the grasping forceps, and the inflatable piece (8) is used for inflating into the air inlet gap through the inner cavity of the catheter (1) so as to enable each clamping arm (5) to deform towards the direction approaching to each other under the action of air entering into the air inlet gap, so that the blood vessel (12) is pressed together;
The clamping arm (5) comprises a flexible clamp arm (52) and an air bag wall (51) which can transversely stretch along the extending direction of the flexible clamp arm (52);
The air bag wall (51) is arranged on the outer side of the flexible clamp arm (52), and the air inlet gap is formed between the air bag wall (51) and the flexible clamp arm (52);
A bent piece elastic piece (11) is arranged in the flexible clamp arm (52), and the bent piece elastic piece (11) is arranged along the extending direction of the flexible clamp arm (52);
the blood flow blocking device further comprises an outer sheath tube (3), the outer sheath tube (3) is sleeved on the periphery of the catheter (1) and the grasping forceps, and the catheter (1) and the grasping forceps can slide relative to the outer sheath tube (3) in the axial direction.
2. The blood flow blocking device according to claim 1, wherein the catheter (1) comprises a first catheter section (101) and a second catheter section (102) connected to one end of the first catheter section (101);
the inflatable element (8) is arranged at the end of the first conduit section (101) remote from the second conduit section (102); the grasper is arranged at one end of the second pipe section (102) far away from the first pipe section (101);
The first conduit section (101) is internally provided with a first air inlet channel (2), and the first air inlet channel (2) is communicated with the inflatable piece (8); at least two second air inlet channels (4) are arranged in the second conduit section (102), and the second air inlet channels (4) are in one-to-one correspondence with the clamping arms (5); the air inlet end of the second air inlet channel (4) is communicated with the first air inlet channel (2), and the air outlet end of the second air inlet channel (4) is communicated with the air inlet gap of the corresponding clamping arm (5).
3. The blood flow blocking device according to claim 2, characterized in that the radial cross-sectional area (41) of the second air intake channel is smaller than the radial cross-sectional area of the first air intake channel (2).
4. The blood flow blocking device of claim 1, wherein a side of the flexible clamp arm (52) facing the blood vessel (12) is of a silicone material.
5. The blood flow blocking device according to claim 1, characterized in that the balloon wall (51) is corrugated in the direction of extension of the balloon wall (51);
and/or the air bag wall (51) is made of plastic.
6. The blood flow blocking device according to claim 1, further comprising a pressure gauge (10) for measuring the pressure inside the balloon wall (51); the pressure gauge (10) is connected with the air inlet gap.
7. A blood flow blocking device according to any one of claims 1 to 3, characterized in that the end of the inflatable member (8) adjacent to the conduit (1) is provided with a first valve (7) for adjusting the direction of the flow of gas inside the conduit (1).
8. The blood flow blocking device according to claim 1, characterized in that the outer sheath (3) is of a plastic material that can be torn off.
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| CN202210125402.9A CN114521934B (en) | 2022-02-10 | 2022-02-10 | Blood flow blocking device |
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| CN202210125402.9A CN114521934B (en) | 2022-02-10 | 2022-02-10 | Blood flow blocking device |
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| CN114521934B true CN114521934B (en) | 2024-05-28 |
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| US6395015B1 (en) * | 1997-07-31 | 2002-05-28 | Medtronic Inc. | Temporary vascular seal for anastomosis |
| CN102166127A (en) * | 2011-05-13 | 2011-08-31 | 江苏省人民医院 | Renal artery directional blocking device |
| CN203153822U (en) * | 2013-02-26 | 2013-08-28 | 泉润华泽科技(北京)有限公司 | Temporary occlusion and cardioplegic solution perfusion device for aortic-septum semi-lunar valve |
| CN206560457U (en) * | 2016-12-16 | 2017-10-17 | 贵州省人民医院 | A kind of substantive device of blocking out blood flow of inflatable kidney |
| CN107485421A (en) * | 2017-08-14 | 2017-12-19 | 中国人民解放军第二军医大学 | The vascular flow control device of controllable curvature |
| CN211094427U (en) * | 2019-10-30 | 2020-07-28 | 天津市第五中心医院（北京大学滨海医院） | Porta hepatis blood vessel blocking forceps |
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2022
- 2022-02-10 CN CN202210125402.9A patent/CN114521934B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6395015B1 (en) * | 1997-07-31 | 2002-05-28 | Medtronic Inc. | Temporary vascular seal for anastomosis |
| CN102166127A (en) * | 2011-05-13 | 2011-08-31 | 江苏省人民医院 | Renal artery directional blocking device |
| CN203153822U (en) * | 2013-02-26 | 2013-08-28 | 泉润华泽科技(北京)有限公司 | Temporary occlusion and cardioplegic solution perfusion device for aortic-septum semi-lunar valve |
| CN206560457U (en) * | 2016-12-16 | 2017-10-17 | 贵州省人民医院 | A kind of substantive device of blocking out blood flow of inflatable kidney |
| CN107485421A (en) * | 2017-08-14 | 2017-12-19 | 中国人民解放军第二军医大学 | The vascular flow control device of controllable curvature |
| CN211094427U (en) * | 2019-10-30 | 2020-07-28 | 天津市第五中心医院（北京大学滨海医院） | Porta hepatis blood vessel blocking forceps |
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| CN114521934A (en) | 2022-05-24 |
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