WO2015157888A1 - Commutateur d'arrêt avec pression positive de type à ballonnet pour cathéter à usage médical - Google Patents

Commutateur d'arrêt avec pression positive de type à ballonnet pour cathéter à usage médical Download PDF

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Publication number
WO2015157888A1
WO2015157888A1 PCT/CN2014/075279 CN2014075279W WO2015157888A1 WO 2015157888 A1 WO2015157888 A1 WO 2015157888A1 CN 2014075279 W CN2014075279 W CN 2014075279W WO 2015157888 A1 WO2015157888 A1 WO 2015157888A1
Authority
WO
WIPO (PCT)
Prior art keywords
medical catheter
locking
balloon
elastic
positive pressure
Prior art date
Application number
PCT/CN2014/075279
Other languages
English (en)
Chinese (zh)
Inventor
陈永曦
Original Assignee
福建省百仕韦医用高分子股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 福建省百仕韦医用高分子股份有限公司 filed Critical 福建省百仕韦医用高分子股份有限公司
Priority to PCT/CN2014/075279 priority Critical patent/WO2015157888A1/fr
Publication of WO2015157888A1 publication Critical patent/WO2015157888A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
    • A61M39/285—Cam clamps, e.g. roller clamps with eccentric axis

Definitions

  • the present invention relates to a medical catheter stop clip, and more particularly to a balloon positive pressure cutoff switch for a medical catheter.
  • the applicant has previously applied for a patent for the invention of a medical catheter stop clip that can be operated with one hand.
  • the application has the advantages of simple and convenient operation, no negative pressure during the operation process, no need to pull the medical catheter, and no operation accidents caused by pulling the medical catheter.
  • This application is based on an improvement of this prior application.
  • the previous application has the following deficiencies in the use process: That is, after the active lock lever of the stop clip is turned off for a long period of time, for example, after about one day, it is reopened again, and the pressure-deformed medical catheter cannot be restored to the original state for a short time, although it does not affect the infusion, but it will affect the flow stop again. At the time of the break, the positive pressure liquid flow generated is insufficient.
  • the object of the present invention is to overcome the deficiencies in the prior art, and to provide an operation that is simple and convenient in operation, does not generate negative pressure during operation, and does not require drawing of a medical catheter, and does not cause an operation due to drawing of the medical catheter.
  • the flow of positive pressure fluid generated by the stop-and-shut shutdown can still ensure a sufficient positive pressure cut-off switch for medical catheters.
  • the object of the present invention is achieved by the following route.
  • Balloon positive pressure cut-off switch for medical catheter Included in the body and a through-hole for the passage through the medical catheter, the medical catheter has a clamped state and a relaxed state in the through-hole, the main point of which is that the utility model further comprises an active lock lever, and the body is A locking rod locking sleeve is provided with a locking elastic card and a retaining convex card which are laterally elastically extendable in the longitudinal direction of the movable locking rod.
  • the locking convex card and the retaining convex card are both a reverse pawl and a movable locking rod inserted.
  • the bottom portion of the locking rod is inserted into the through hole, and the medical catheter is inserted when the locking convex card is engaged with the locking rod locking sleeve Clamping on the clamping surface on the bottom side of the tube hole, the medical catheter corresponding to the clamping surface is composed of an elastic balloon or coated with an elastic balloon on the outer peripheral surface of the medical catheter.
  • the locking convex card and the locking rod locking sleeve are separated from the card and enter the above-mentioned socket section.
  • the retaining clip ensures that the movable lock lever is always inserted in the lock lever locking sleeve, and the medical catheter passing through the through hole is always at the clamping surface of the bottom surface of the movable lock rod and the bottom side of the through hole. between.
  • the top surface of the movable lock lever and the lower bottom surface of the lock lever lock sleeve are respectively clamped and compressed by the thumb of the single hand and any other fingers, and the lock lock card is released when the movable lock lever is pressed against the lock lever sleeve to the card contact position.
  • the sleeved section is laterally elastically stretched to engage with the corresponding card position of the lock lever locking sleeve, the medical catheter is clamped, and since the locking convex card is the anti-reverse pawl, the movable locking lever is locked in the reverse direction.
  • the movable locking rod is opened relative to the locking rod locking sleeve, and the medical catheter is no longer clamped in the through-hole, and is in a diastolic state, and the anti-distraction card ensures that the movable locking rod does not disengage from the lock.
  • the plug of the rod locking sleeve The elasticity of the elastic balloon ensures that the elastic balloon can be quickly restored to its original state without being affected by the clamping and closing time during the diastolic state, thus ensuring When the flow stop is turned off again, the positive pressure liquid flow generated is sufficient.
  • the object of the present invention can also be achieved by the following means.
  • This elastic balloon is not necessarily a spherical shape, but is a common name for medically elastic bladders. In this application, further optimization regarding the elastic balloon can be:
  • the elastic balloon is either an ellipsoidal shape or a cylindrical shape.
  • the bottom structure of the movable lock lever can be further optimized to:
  • the bottom of the movable lock bar is either a slightly blunt tooth shape, or a high or low stepped tooth shape, or a stepped tooth shape of different heights, and the tooth top line intersects or is perpendicular to the axis of the pipe hole. But further optimization is:
  • the bottom of the movable lock bar has a stepped surface in which the concave step is long and corresponds to the elastic balloon, and the convex step is short and corresponds to the medical catheter at the elastic balloon side.
  • the convex step contacts and clamps the medical catheter, while the concave step contacts and clamps the elastic balloon.
  • the convex step is located in front of the concave step relative to the infusion direction.
  • the bottom of the movable lock bar has a stepped surface in which the concave step is long and corresponds to the elastic balloon, and the convex step is short and corresponds to the medical catheter at the edge of the elastic balloon.
  • the clamping surface on the bottom side of the pipe hole also has a step surface, and the step surface corresponds to the step surface of the bottom of the movable lock bar.
  • the bottom step of the movable lock lever and The stepped surface of the bottom side of the tube hole has a convex height of the convex step relative to the concave step smaller than a step difference between the elastic balloon and the medical catheter adjacent to the side.
  • the movable lock bar is composed of an elastic piece and a main body, and the two elastic pieces are symmetrically distributed on both sides of the main body and elastically connected with the main body, and the two elastic pieces have lateral expansion and contraction, and the locking convex card and the retaining convex card are sequentially spaced along the longitudinal direction of the elastic piece. Distribution, a total of two locking convex cards and two retaining convex cards are symmetrically distributed on the two elastic pieces, respectively, in the clamped state, the two elastic pieces with the locking convex card and the retaining convex card are inserted in the lock bar locking sleeve In the cavity.
  • the locking convex card can be released.
  • a compression spring can be placed between the elastic piece and the main body to achieve elasticity, but the optimized structure should be:
  • the bottoms of the two elastic pieces are connected with the main body, and the upper part of the bottom part is freely extended upward to form an open jaw shape, and the two clamping jaws respectively have a slot between the main body and the main body, and the main body extends upward and protrudes to form the upper part of the upper jaw.
  • the upper top portion is also exposed outside the lock lever locking sleeve, and both the locking convex card and the retaining convex cam are a pawl fixed on the clamping jaw.
  • the outer sides of the two jaws are inclined or curved, and the two sides of the locking sleeve locking sleeve are provided with two clamping jaws to form two elastic buckles,
  • the bottoms of the two elastic release tabs are connected to the main body, and the upper part of the bottom portion is freely extended upward to form an open jaw shape, and the two jaws respectively have a slot between the lock lever sleeve body and the dew point on the pinch ear respectively. Compressed on the slope or curved surface of the two elastic piece jaws.
  • the sleeve portion of the movable lock lever and the lock lever lock sleeve inserted in the lock lever locking sleeve is either located at the upper portion of the movable lock lever or at the upper and lower portions of the movable lock lever.
  • lock bar locking sleeve can be optimized in the following manner:
  • the lock lever locking sleeve includes a main body having a cavity open at one end, and the movable lock rod is inserted into the cavity from the opening, and the cavity is provided with a sleeved section which is sleeved with a corresponding portion of the movable lock lever and
  • the embossing card may be in the free section from above, the lower end of the cavity intersecting the through-hole and the bottom end of the cavity being the clamping face of the medical catheter.
  • the locking convex card on the movable lock lever is sleeved in the socket section; in the clamped state, the locking convex card is also located in the socket section, or enters the free passage through the socket section.
  • the locking cam can use the step of the socket section and the free section joint as the position to be engaged with the lock lever locking sleeve.
  • the side wall of the cavity corresponding to the retaining clip in the free passage is preferably transparent and open.
  • the other end of the free passage further has a sleeve section, and the bottom end of the movable lock rod sequentially passes through the upper sleeve section, the free section, and then enters the sleeve section to be inserted into the sleeve hole.
  • the main body cavity has a socket section at both ends, and the sleeve of the movable lock rod and the lock rod locking sleeve inserted in the cavity has better stability.
  • the clamping surface of the bottom of the locking rod locking sleeve cavity is either a flat surface or a tooth shape corresponding to the tooth shape of the bottom of the movable locking rod and intermeshing.
  • the axis of the through hole of the locking rod locking sleeve may be parallel to the wide surface of the locking sleeve, in the middle of the narrow surface; or may be perpendicular to the wide surface of the locking sleeve, in the middle of the wide surface.
  • the present invention has the following advantages over the prior art: The operation is simple and convenient, no negative pressure is generated during the operation, and the medical catheter is not required to be pulled, and an operation accident caused by pulling the medical catheter is not generated.
  • FIG. 1 is a schematic view showing the structure of an infusion set provided with a flow stop clip in the prior art.
  • FIG. 2 is a schematic perspective view showing the structure of a balloon positive pressure cutoff switch for a medical catheter according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic perspective view showing the structure of a movable lock lever in a balloon positive pressure cutoff switch for a medical catheter according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic perspective view showing the structure of a lock lever locking sleeve in a balloon positive pressure cutoff switch for a medical catheter according to the first embodiment of the present invention
  • Figure 5 is a schematic cross-sectional perspective view showing the structure of a lock lever locking sleeve in a balloon positive pressure cutoff switch for a medical catheter according to the first embodiment of the present invention
  • Figure 6 is a schematic view showing the balloon positive pressure cutoff switch for medical catheters in a clamped state according to the first embodiment of the present invention
  • Figure 7 is a schematic view showing the balloon positive pressure cutoff switch for medical catheters in a diastolic state according to the first embodiment of the present invention
  • Figure 8 is a perspective view of a balloon positive pressure cut-off switch for a medical catheter according to the first embodiment of the present invention.
  • Figure 9 is a perspective view of a balloon positive pressure cut-off switch for a medical catheter according to a preferred embodiment of the present invention.
  • 1 movable lock lever 1.1 main body; 1.1.1 step surface; 1.2 elastic piece; 1.2.1 locking plane; 1.2.2 locking the convex card; 1.2.3 the outer side of the jaw; 1.2.4 retaining the convex card; 1.3 on the top 2 lock bar locking sleeve; 2.1 main body; 2.1.1 socket section; 2.1.2 cavity; 2.1.3 free passage; 2.2 elastic tripping pinch; 2.2.1 dew point; 2.2.2 pipe hole; 2.2. 3 clamping surface; 3 medical catheter; 3.1 positive pressure balloon; 3.2 elastic recovery member; 3.3 elastic balloon.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a balloon positive pressure cut-off switch for medical catheters The utility model comprises an active locking rod 1 and a locking rod locking sleeve 2.
  • the bottom of the locking rod locking sleeve 2 has a through hole 2.2.2 for passing through the medical catheter, and the medical catheter 3 is in the through hole 2.2.2. It has a clamped state and a relaxed state.
  • the movable lock bar 1 is longitudinally spaced apart from the horizontally elastically stretchable locking convex card 1.2.2 and the retaining convex card 1.2.4, the locking convex card 1.2.2 and the retaining convex card 1.2.4 are both a kind of anti-reverse spine
  • the claw, the movable lock lever 1 is inserted in the lock lever locking sleeve 2 and one of the longitudinal passage movable lock lever 1 is sleeved with the lock lever locking sleeve 2, the bottom portion of which extends into the through hole 2.2.2, and the locking convex card 1.2.2
  • the medical catheter 3 is clamped on the clamping surface 2.2.3 on the bottom side of the through hole 2.2.2, and the locking convex card 1.2.2 is separated from the lock lever locking sleeve 2. After the card is touched, it enters the above-mentioned socket section 2.1.1.
  • the movable lock lever 1 is relaxed to the limit state, the retaining convex card 1.2.4 is in contact with
  • the movable lock bar 1 is composed of an elastic piece 1.2 and a main body 1.1, and the two elastic pieces 1.2 are symmetrically distributed on both sides of the main body 1.1 and elastically coupled to the main body 1.1.
  • the bottom of the two elastic pieces 1.2 is connected with the main body 1.1, and the upper part of the bottom portion is freely extended upward to form an open jaw shape, and the two clamping jaws respectively have a slot between the main body 1.1, and the main body 1.1 extends upward and protrudes from the two jaws.
  • the upper top 1.3, the upper top 1.3 is also exposed outside the lock lever locking sleeve 2.
  • the locking convex card 1.2.2 and the retaining convex card 1.2.4 are both pawls fixed on the clamping jaws.
  • the two elastic pieces 1.2 have a lateral telescopic spring, and the locking convex card 1.2.2 and the retaining convex card 1.2.4 are sequentially spaced apart along the longitudinal direction of the elastic piece, and there are two locking convex cards 1.2.2 and two non-stopping portions.
  • the convex cards 1.2.4 are symmetrically distributed on the two elastic sheets 1.2, respectively.
  • the outer side of the two jaws 1.2.3 has an oblique curved surface.
  • the bottom of the movable lock bar 1 has a step surface 1.1.1, wherein the concave step is long and corresponds to the elastic balloon 3.3, and the convex step is short and corresponds to the catheter on the side of the elastic balloon 3.3.
  • the clamping surface on the bottom side of the pipe hole also has a step surface, and the step surface corresponds to the step surface of the bottom of the movable lock bar.
  • the convex height of the convex step relative to the concave step is smaller than the step difference between the elastic balloon 3.3 and the medical catheter 3. This ensures the bottom step surface of the movable lock lever 1 which is pressed down, firstly the concave step is first contacted with the elastic balloon 3.3.
  • the elastic balloon 3.3 is composed of a positive pressure balloon 3.1 and an elastic recovery member 3.2 which protrudes from a section of the medical catheter 3 by a cylindrical step to form a columnar shape.
  • the balloon, the elastic recovery member 3.2 is coated and fixed to the outer peripheral surface of the positive pressure balloon 3.1.
  • the positive pressure balloon 3.1 together with the elastic recovery member 3.2 constitutes a stepped drop to the medical catheter
  • the lock lever locking sleeve includes a main body 2.1 and an elastic release tab 2.2, and two sides of the main body 2.1 are correspondingly provided with two jaws to form two Elastic tripping pinch 2.2
  • the bottom of the two elastic release tabs 2.2 is connected to the main body 2.1, and the upper part of the bottom portion is freely extended upward to form an open jaw shape, and each of the two clamping jaws has a slot between the body and the main body 2.1, and the pinch ears respectively have a dew point 2.2. .1 is pressed on the inclined surface of the jaws of the two elastic pieces 1.2.
  • the main body 2.1 has a cavity 2.1.2 which is open at one end, into which the movable lock bar 1 is inserted, and the cavity 2.1.2 is provided with a corresponding portion of the movable lock bar 1
  • the ferrule paragraph 2.1.1 and the detachment convex card 1.2.4 can be in the free paragraph 2.1.3 from above, the lower end of the cavity 2.1.2 intersects the through hole 2.2.2 and the bottom end face 2.2.3 is The clamping surface of the medical catheter 3.
  • the other end of the free passage 2.1.3 also has a socket section 2.1.1.
  • the bottom end of the movable lock lever 1 passes through the previous socket section 2.1.1, and the free passage 2.1.3 enters the socket section 2.1. .1 Socket and then extend into the tube hole 2.2.2.
  • both ends of the body cavity 2.1.2 have a socket section 2.1.1.
  • the side wall of the cavity corresponding to the detachment convex card 1.2.4 is opened and opened.
  • the clamping surface 2.2.3 at the bottom of the locking sleeve locking sleeve cavity is a combination of a flat surface and a groove.
  • the locking rod locks the through hole 2.2.2
  • the axis is parallel to the wide side of the locking sleeve and is in the middle of the narrow side.
  • the locking convex card 1.2.2 on the movable lock lever 1 is sleeved in the socket section 2.1.1 or the socket section 2.1.1 is ejected; in the clamped state, the convex card is locked 1.2. 2 through the socket section 2.1.1 into the free paragraph 2.1.3, at this time, the locking convex card 1.2.2 uses the step of the joint between the paragraph 2.1.1 and the free paragraph 2.1.3 as the locking rod locking sleeve 2 The location of the card touch.
  • a positive pressure flow is generated and driven out.
  • the blood flowing back into the human end catheter due to withdrawal of the infusion set or the syringe is prevented from being blocked by the blood coagulation due to the indwelling catheter end.
  • the movable lock lever continues to move downward, and the conduit between the closed convex step at the bottom of the movable lock lever and the convex surface of the punching hole of the through-hole is squeezed and deformed, and the inner wall of the catheter is tightly fitted to each other, and the liquid passage in the conduit It was cut off and the purpose of shutting down the catheter was achieved.
  • the locking and clamping structure has no over-limit and over-pressure operation during the clamping process, so that the medical catheter does not occur after the finger is released.
  • Rebounding causes negative pressure in the lumen of the tube, so that the body fluid in the patient is not inhaled and inserted into the medical catheter end of the patient, thereby avoiding blockage of the medical catheter and prolonging the indwelling time of the medical catheter.
  • the lock lever elastic piece 1.2 Since the lock lever elastic piece 1.2 has a retaining convex card 1.2.4, the movable lock lever 1 After the pop-up trip, the elastic piece 1.2 is restored to its original state, and the stop-locking card 1.2.4 is removed. The movable lock lever 1 does not completely disengage from the lock lever locking sleeve cavity. For easy pinching operation. Due to the elastic recovery of the elastic recovery member, the positive pressure balloon which is fixed together with the elastic recovery member is restored to the original shape, and at the same time, the closed catheter lumen passage is opened, and the infusion can be infused again through the infusion connector.
  • a balloon positive pressure cut-off switch for medical catheters A columnar elastic balloon is directly made of a highly elastic material. 3.3 Then, the medical catheter 3 is fixed to both ends of the elastic balloon 3.3.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention a pour objet une pince d'arrêt d'écoulement pour cathéter à usage médical et plus concrètement un commutateur d'arrêt avec pression positive de type à ballonnet pour cathéter à usage médical, lequel comprend un corps et des orifices traversants pratiqués sur le corps et utilisés par le cathéter médical. L'invention comprend avantageusement une barre de blocage mobile, dont le corps constitue une tige de blocage et qui présente, à intervalles prédéfinis sur la longueur, une protubérance de blocage et une protubérance de butée-arrêt, toutes deux tenant lieu de cliquet anti-retour. La barre de blocage mobile est insérée dans une cavité recevant un levier de blocage en position bloquée, lequel recouvre longitudinalement la barre de blocage mobile, la partie inférieure du levier de blocage s'étendant dans l'orifice traversant. Lors du contact entre la protubérance de blocage et le levier de blocage, la pince du cathéter médical est serrée contre la face de serrage du côté inférieur de l'orifice traversant, le pourtour extérieur du cathéter médical étant recouvert d'un ballonnet élastique. L'invention se particularise par une utilisation aisée, sans risque de pression négative, ni d'étirage du cathéter, ce qui permet d'éviter les accidents liés à la manipulation.
PCT/CN2014/075279 2014-04-14 2014-04-14 Commutateur d'arrêt avec pression positive de type à ballonnet pour cathéter à usage médical WO2015157888A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/075279 WO2015157888A1 (fr) 2014-04-14 2014-04-14 Commutateur d'arrêt avec pression positive de type à ballonnet pour cathéter à usage médical

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/075279 WO2015157888A1 (fr) 2014-04-14 2014-04-14 Commutateur d'arrêt avec pression positive de type à ballonnet pour cathéter à usage médical

Publications (1)

Publication Number Publication Date
WO2015157888A1 true WO2015157888A1 (fr) 2015-10-22

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0502321A1 (fr) * 1991-03-06 1992-09-09 Joka Kathetertechnik Gmbh Dispositif de fermeture d'un conduit de liquide, en particulier dispositif de prise de liquide ou d'infusion
WO2004009171A1 (fr) * 2002-07-16 2004-01-29 Georg-August-Universität Göttingen Catheter veineux pourvu d'une piece d'assemblage en t
US20100106101A1 (en) * 2008-10-28 2010-04-29 Medical Components, Inc. Clamp for flexible tubing
CN102824688A (zh) * 2012-09-13 2012-12-19 张亚平 安全静脉穿刺针用离断截止夹
CN203663240U (zh) * 2013-11-02 2014-06-25 福建省百仕韦医用高分子股份有限公司 可单手操作医用导管止流夹
CN203943955U (zh) * 2014-04-14 2014-11-19 福建省百仕韦医用高分子股份有限公司 医用导管用球囊式正压截止开关

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0502321A1 (fr) * 1991-03-06 1992-09-09 Joka Kathetertechnik Gmbh Dispositif de fermeture d'un conduit de liquide, en particulier dispositif de prise de liquide ou d'infusion
WO2004009171A1 (fr) * 2002-07-16 2004-01-29 Georg-August-Universität Göttingen Catheter veineux pourvu d'une piece d'assemblage en t
US20100106101A1 (en) * 2008-10-28 2010-04-29 Medical Components, Inc. Clamp for flexible tubing
CN102824688A (zh) * 2012-09-13 2012-12-19 张亚平 安全静脉穿刺针用离断截止夹
CN203663240U (zh) * 2013-11-02 2014-06-25 福建省百仕韦医用高分子股份有限公司 可单手操作医用导管止流夹
CN203943955U (zh) * 2014-04-14 2014-11-19 福建省百仕韦医用高分子股份有限公司 医用导管用球囊式正压截止开关

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