WO2015017962A1 - Commutateur de stase d'un cathéter de perfusion in vitro positionné par une rainure annulaire - Google Patents

Commutateur de stase d'un cathéter de perfusion in vitro positionné par une rainure annulaire Download PDF

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Publication number
WO2015017962A1
WO2015017962A1 PCT/CN2013/080778 CN2013080778W WO2015017962A1 WO 2015017962 A1 WO2015017962 A1 WO 2015017962A1 CN 2013080778 W CN2013080778 W CN 2013080778W WO 2015017962 A1 WO2015017962 A1 WO 2015017962A1
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WO
WIPO (PCT)
Prior art keywords
joint
joint body
infusion
valve
joint base
Prior art date
Application number
PCT/CN2013/080778
Other languages
English (en)
Chinese (zh)
Inventor
张建铭
Original Assignee
Zhang Jianming
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 Zhang Jianming filed Critical Zhang Jianming
Priority to CN201380078540.5A priority Critical patent/CN105407942B/zh
Priority to PCT/CN2013/080778 priority patent/WO2015017962A1/fr
Publication of WO2015017962A1 publication Critical patent/WO2015017962A1/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
    • 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
    • A61M2039/226—Spindles or actuating means
    • 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
    • A61M2039/229—Stopcocks
    • 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
    • A61M25/00—Catheters; Hollow probes
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0097—Catheters; Hollow probes characterised by the hub

Definitions

  • the invention relates to a device for introducing a medium into a body, in particular to a ring groove positioning type external infusion catheter stop switch.
  • the catheter at both ends of the stop clip is inevitably pressed by hand, especially the catheter at the front of the stop clip (near the end of the human body) will generate negative pressure due to the release of the hand-held compression, blood It will flow back into the catheter from the blood vessel, causing blood to clot and block the catheter, unable to infuse again, and severe thrombosis may occur, causing damage to the patient.
  • the catheter assembly is placed on the patient's body, and the length of the catheter is limited. If the catheter is inadvertently pulled, the catheter assembly will be pulled out of the patient's body. In order to avoid the above accident, the medical staff should be cautious when operating, sometimes stop the flow. If the length is not enough, it is still not guaranteed to drive the blood inside the catheter clean. Therefore, this operation mode is cumbersome, and the workload and psychological burden of the medical staff are greatly increased, and the negative pressure phenomenon cannot be completely eliminated.
  • the object of the present invention is to overcome the deficiencies of the prior art and to provide a ring groove positioning type external infusion catheter stop switch which can effectively eliminate negative pressure and is convenient to operate.
  • the object of the present invention is achieved by the following route.
  • the ring groove positioning type external infusion catheter stop switch has the following components: a joint base and a joint body, and the front end of the joint base is connected with the infusion conduit or connected with the infusion member on the infusion line, and the rear end of the joint body is The infusion catheter is connected, and the front part of the joint body is inserted into the inner cavity of the joint base in a telescopic sliding manner, and the joint body and the inner cavity of the joint base have a space for pushing the joint body, and the joint base inner cavity is circumferentially An annular groove is disposed.
  • a resilient plastic body is disposed on the joint body with a protrusion that can be inserted into and withdrawn from the annular groove, and the joint body is pushed into position, and the protrusion is embedded in the annular groove, and the joint body cavity passes through
  • a shut-off valve is in communication with the inner cavity of the joint base.
  • the shut-off valve is disposed in the joint body propulsion space and completes the shutoff of the shut-off valve by pushing the joint body in position.
  • the inner cavity of the joint base forms a closed cavity, and the volume of the closed cavity is changed by the advancement and retreat of the axial displacement of the joint body.
  • the closed cavity is enlarged; the joint body is advanced, the closed cavity is reduced, the push is advanced, and the infusion channel is cut off.
  • the joint body is retracted first, the shut-off valve is opened, and the closed cavity is enlarged to facilitate the accommodation of more liquid.
  • the needle tube is withdrawn, the joint body is advanced, and the closed cavity is enlarged from large to small, thereby filling the negative pressure. Space to prevent negative pressure or to expel blood from the catheter into the blood vessel to eliminate negative pressure.
  • This method of preventing negative pressure and eliminating negative pressure is simple, effective, and convenient to operate.
  • the intervention of the stop valve eliminates the negative pressure and cuts off the infusion channel, which is not only more sanitary and safe, but also ensures that the connector body must be retracted before re-infusion (otherwise the valve is closed and cannot be infused).
  • the joint body After the infusion, the joint body has a space for advancement to eliminate the negative pressure.
  • the process of gradually intercepting as the joint body advances makes the shut-off valve also function as a flow regulating valve.
  • the annular groove and the protrusion are arranged to effectively position the joint body that is pushed into position, and it is not easy to actuate the joint body due to malfunction.
  • This extracorporeal infusion catheter stop switch can be widely used on infusion sets as well as in indwelling catheters and catheters of other medical infusion devices.
  • the object of the present invention can also be achieved by the following means.
  • the infusion member on the infusion line is a member having an infusion channel in the interior of the infusion catheter.
  • the infusion member can be an indwelling needle catheter assembly.
  • the stop switch of the present invention can be infinitely approached forward or backward to the other on the infusion line.
  • the member, thereby omitting the spanning connection of the partial infusion catheter, makes the overall structure of the infusion device more compact.
  • the protrusions are distributed circumferentially or continuously along the joint body or intermittently.
  • This projection is preferably provided at the end of the joint body.
  • the projection is disposed at the end of the joint body, and the end of the joint body is sawed with a groove in the axial direction.
  • This groove makes the contraction space of the joint body end larger, thereby reinforcing the elastic space of the joint body end.
  • the protrusion is rounded at a maximum radial extent, and the front side has a vertical surface that can be stopped, and the rear side has a slope that facilitates the exit of the protrusion.
  • the cross-sectional shape of the annular groove is conjugate with the shape of the protrusion.
  • the front section of the joint body and the inner cavity of the joint base have a sealing ring, and a damped fitting connection is made by a seal ring between the two.
  • This damped mating connection provides both a seal and a hand-feel and viscous joint body.
  • shut-off valve Further optimization of the shut-off valve is:
  • the valve flap of the shut-off valve is located at the end of the joint body, and the sealing surface of the shut-off valve is located on the inner wall of the joint base.
  • the joint body is again a valve stem.
  • the inner cavity of the joint comprises a vertical passage and a transverse passage, the rear end of the vertical passage communicates with the infusion conduit, the front end is blind and communicates with the transverse passage, the transverse passage is located in the inner core of the joint body, and the end of the joint body is smaller than the inner cavity of the joint base
  • the gap between the two serves as an infusion channel communicating with the lateral channel
  • the end of the connector body is tapered and serves as a valve flap of the shut-off valve
  • the inner wall of the joint base is a circle corresponding to the cone.
  • the table-shaped step serves as a sealing surface of the shut-off valve, and the inward opening of the truncated-shaped step is an infusion passage port.
  • the shut-off valve When the tapered end of the joint body is in contact with the corresponding tapered step, the shut-off valve is closed; and when the joint body is retracted, the shut-off valve is opened, and the infusion enters the tapered step through the vertical passage of the joint body, the transverse passage, and the radial gap. Internal contraction.
  • the inner cavity of the joint base has a stepped shape
  • the corresponding joint body also has a stepped shaft shape and is sleeved with a corresponding portion of the inner cavity of the joint base.
  • the other is:
  • the inner cavity of the joint includes a vertical passage
  • the valve flap is a plurality of elastic tongues wrapped around the end of the joint body
  • the inner wall of the joint base is a step corresponding to the closed shape of the plurality of elastic flaps
  • the inner mouth of the step is an infusion channel.
  • the inner cavity of the joint includes a vertical passage, and the valve flap is located at a vertical passage opening of the joint body end, and the inner wall of the joint base is a pointed cone or a truncated cone which protrudes in the direction of the joint body.
  • the wall is distributed with a plurality of infusion channels at a circumferential position around the vertical passage opening.
  • the protruding portion of the tapered or truncated-shaped retaining wall projects into the vertical passage of the joint body and is blocked by the advancement of the joint body. It is cut off at the vertical passage opening.
  • the infusion passage on the retaining wall is located at the periphery of the vertical passage opening, that is, in the region outside the diameter of the vertical passage opening, such that when the central portion of the retaining wall is blocked in the vertical passage opening, the retaining wall The infusion channel cannot be connected to the vertical channel and is thus blocked.
  • the front end of the joint body is covered with a plastic body.
  • the front part of the plastic body has a truncated cone shape and the rear section has a short cylindrical shape.
  • the corresponding part in the inner cavity of the joint base is conjugate with the shape, and the plastic body and the conjugate cavity are cut off.
  • a valve wherein the plastic body is a shut-off valve flap, the conjugate cavity is a sealing valve sealing surface, and the plastic body is tightly coupled with the conjugate cavity, and is squeezed into the conjugate cavity by the elasticity of the plastic body, thereby
  • the joint base and the lifting head can be relatively fixed while the shut-off valve is closed.
  • the inner cavity of the joint penetrates front and rear, and the rear end of the joint communicates with the lumen of the infusion catheter.
  • the front end is covered by the plastic body and cuts off into a blind hole.
  • the passage is a vertical passage, and a vertical passage is passed through the blind end of the vertical passage.
  • the channel constitutes a transverse channel, and the inner cavity of the joint base after the conjugate cavity is stepped enlarged, and there is a gap between the backward plastic body and the step surface, and the gap crosses the lateral channel and the infusion connected with the inner cavity of the joint base Catheter lumen.
  • the present invention has the following advantages over the prior art: the method of preventing negative pressure and eliminating negative pressure is simple, effective, and convenient to operate.
  • the intervention of the stop valve eliminates the negative pressure and cuts off the infusion channel, which is not only more sanitary and safe, but also ensures that the connector body must be retracted before re-infusion (otherwise the valve is closed and cannot be infused).
  • the joint body has a space for advancement to eliminate the negative pressure.
  • the process of gradually intercepting as the joint body advances makes the shut-off valve also function as a flow regulating valve.
  • the annular groove and the protrusion are arranged to effectively position the joint body that is pushed into position, and it is not easy to actuate the joint body due to malfunction.
  • FIG. 1 is a schematic view showing the structure of a prior art in-situ indwelling catheter clamped on an indwelling catheter;
  • figure 2 It is a schematic structural view of the annular groove positioning type external infusion catheter stop switch used in the indwelling state in the cut-off state according to the preferred embodiment of the present invention
  • FIG. 3 is an enlarged schematic view of the annular groove-type in vitro infusion catheter stop switch of Figure 2;
  • FIG. 4 is a schematic perspective view showing the structure of a joint body in a ring groove positioning type infusion catheter stop switch according to a preferred embodiment of the present invention
  • Figure 5 It is a structural schematic diagram of the annular groove positioning type external infusion catheter stop switch used in the open state in the open state according to the preferred embodiment of the present invention.
  • conduit assembly 1 conduit assembly 2 connector body 21 vertical channel 22 transverse channel 23 clearance 24 spline 25 projection 26 groove 3 Connector base 31 Ring groove 4 Infusion line 5 Sealant plug 6 Seal ring 7 Globe valve 71 Disc 72 Sealing surface.
  • an indwelling needle using the ring groove positioning type external infusion catheter stop switch of the present invention using the ring groove positioning type external infusion catheter stop switch of the present invention, the catheter assembly 1 and the joint body 2, joint base 3, infusion catheter 4 and sealant 5 and so on.
  • the annular groove type external infusion catheter stop switch includes a joint base 3, a joint body 2, and a sealing ring 6 And the shut-off valve 7, the front end of the joint base 3 is connected with the infusion conduit 4, the rear end of the joint body 2 is connected with the infusion conduit 4, and the front end of the joint body 2 is inserted into the joint base 3 in a retractable manner.
  • the joint body 2 and the inner cavity of the joint base 3 have a space for advancing the joint body 2, and an annular groove 31 is arranged in the inner cavity of the joint base 3 in the circumferential direction, correspondingly, in the joint body 2
  • the upper elastic plastic body is provided with a protrusion 25 which can be inserted into and withdrawn from the annular groove 31, and pushes the joint body 2 in position, and the protrusion 25 is embedded in the annular groove 31, and the joint body 2
  • the inner chamber communicates with the inner chamber of the joint base 3 via a shut-off valve 7, which is disposed in the advancement space of the joint body 2 and completes the shutoff of the shut-off valve 7 by the joint body 2 advanced in position.
  • the valve flap 71 of the shut-off valve 7 is located at the end of the joint body 2, and the shut-off valve sealing surface 72 is located on the inner wall of the joint base.
  • the connector body 2 is the valve stem.
  • the joint body 2 is made of a plastic body, and its front end has a truncated cone shape, and a corresponding portion in the inner cavity of the joint base 3 is conjugate with the shape, and the truncated cone end and the conjugate cavity form a shutoff valve.
  • the truncated-shaped end is a shut-off valve flap 71
  • the conjugate cavity is a shut-off valve sealing surface 72
  • the truncated-shaped end is tightly coupled with the conjugate cavity, utilizing the elasticity of the plastic body and the axial end a recess 26 in which the head is recessed Squeeze it into the conjugate cavity.
  • the rear end of the truncated cone is a spline 24 portion, the radial maximum of the spline being the projection 25, the projection 25
  • the radial maximum is rounded, the front side has a vertical surface that can be stopped, and the rear side has a slope which facilitates the exit of the protrusion 25, and the annular groove 31 has a sectional shape and the protrusion 25
  • the cross-sectional shape is conjugate.
  • the body of the joint body 2 includes a vertical passage 21 and a transverse passage 22, and the rear end of the vertical passage 21 and the infusion conduit 4 Connected, the front end is blinded and communicated with the transverse passage 22, the transverse passage 22 is located in the inner core of the joint body 2, and the inner cavity of the joint base 3 has a stepped shape, and the corresponding joint body 2
  • the utility model also has a stepped shaft shape and is sleeved with a corresponding portion of the inner cavity of the joint base 3.
  • the end of the small diameter joint body 2 corresponds to the inner cavity of the large diameter joint base 3, and both Between the gaps 23 As the infusion channel communicates with the lateral channel 22, at this time, the spline 24 of the end of the connector body 2 is still sleeved with the inner cavity of the small diameter connector base 3 and supports the connector body 2, but the spline 24 The flower trough of the portion is connected to the gap 23 and the lumen of the joint base 3 and is thereby in communication with the infusion conduit 4 in front of the joint base 3.
  • the front part of the joint body 2 and the joint base 3 have a seal ring 6 and a seal ring between them 6 Perform a mating connection with damping.
  • This damped mating connection provides both a seal and a hand-feel and viscous joint body.

Abstract

L'invention concerne un dispositif pour introduire un agent dans le corps, en particulier un commutateur de stase d'un cathéter de perfusion in vitro positionné par une rainure annulaire, composé des points principaux suivants : il comprend une base de raccord (3) et un corps de raccord (2), l'extrémité frontale de la base de raccord (3) étant reliée au cathéter de perfusion (4) ou à l'élément de perfusion sur la ligne de perfusion, l'extrémité arrière du corps de raccord (2) étant reliée au cathéter de perfusion (4) et la partie frontale du corps de raccord (2) étant insérée dans la lumière de la base de raccord (3) d'une manière télescopiquement coulissante. Son avantage réside en ce que le moyen pour prévenir et éliminer la pression négative est simple, efficace et facile à mettre en œuvre. L'intervention d'une soupape d'arrêt (7) isole le canal de perfusion tout en éliminant également la pression négative. Ceci est non seulement plus hygiénique et plus sûr, mais assure également que le corps de raccord doit être repoussé avant de réaliser une autre perfusion (sinon, la soupape d'arrêt est isolée et la perfusion ne peut pas être accomplie), de manière telle qu'après l'achèvement de la perfusion, il existe un espace d'avancement permettant au corps de raccord (2) d'éliminer la pression négative. La soupape d'arrêt (7) est également utilisée comme soupape de régulation du flux pour pousser le corps de raccord (2) vers l'avant pour la fermeture graduelle. De plus, la réalisation d'une rainure annulaire (31) et d'une partie saillante (25) assure que le corps de raccord (2) peut être positionné efficacement lorsqu'il est avancé et qu'il n'est pas facile d'actionner le corps de raccord (2) en raison d'un dysfonctionnement.
PCT/CN2013/080778 2013-08-03 2013-08-03 Commutateur de stase d'un cathéter de perfusion in vitro positionné par une rainure annulaire WO2015017962A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380078540.5A CN105407942B (zh) 2013-08-03 2013-08-03 环槽定位式体外输液导管止流开关
PCT/CN2013/080778 WO2015017962A1 (fr) 2013-08-03 2013-08-03 Commutateur de stase d'un cathéter de perfusion in vitro positionné par une rainure annulaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2013/080778 WO2015017962A1 (fr) 2013-08-03 2013-08-03 Commutateur de stase d'un cathéter de perfusion in vitro positionné par une rainure annulaire

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WO2015017962A1 true WO2015017962A1 (fr) 2015-02-12

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WO (1) WO2015017962A1 (fr)

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US20100298782A1 (en) * 2009-05-19 2010-11-25 Nexus Medical, Llc Intravascular valve component with improved valve positioning
CN102058917A (zh) * 2010-12-03 2011-05-18 上海金塔医用器材有限公司 点滴输液器的止液控制装置

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CN1899633A (zh) * 2006-07-21 2007-01-24 张亚平 无针密闭输液接头
US20100298782A1 (en) * 2009-05-19 2010-11-25 Nexus Medical, Llc Intravascular valve component with improved valve positioning
CN102058917A (zh) * 2010-12-03 2011-05-18 上海金塔医用器材有限公司 点滴输液器的止液控制装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108452434A (zh) * 2018-05-24 2018-08-28 深圳市迈威生物科技有限公司 多重单向密闭接头及管路装置
CN108452434B (zh) * 2018-05-24 2024-01-09 深圳市迈威生物科技有限公司 多重单向密闭接头及管路装置

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