CN218870945U - Superior vena cava cannula for extracorporeal circulation - Google Patents
Superior vena cava cannula for extracorporeal circulation Download PDFInfo
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- CN218870945U CN218870945U CN202222590913.6U CN202222590913U CN218870945U CN 218870945 U CN218870945 U CN 218870945U CN 202222590913 U CN202222590913 U CN 202222590913U CN 218870945 U CN218870945 U CN 218870945U
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- vena cava
- superior vena
- extracorporeal circulation
- ring
- connector
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- 210000002620 vena cava superior Anatomy 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 230000007704 transition Effects 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 5
- 210000003462 vein Anatomy 0.000 abstract description 9
- 238000004804 winding Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 10
- 238000001990 intravenous administration Methods 0.000 description 5
- 230000008275 binding mechanism Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000002627 tracheal intubation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 210000004731 jugular vein Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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Abstract
The utility model relates to an epicoele vein intubate technical field discloses an epicoele vein intubate for extrinsic cycle, including constraint mechanism and three-way valve, the three export of three-way valve is fixed respectively and is provided with a connector, no. two connectors and No. three connectors, the equal screw thread in one end of No. two connectors and No. three connectors has cup jointed sealing mechanism, the one end fixedly connected with venous pipe of a connector, the inside heliciform embedding that is of venous pipe is provided with the enhancement silk thread, the internal thread pipe head has been cup jointed to the one end internal thread of venous pipe, the fixed puncture sheath that is provided with of one end that the venous pipe was kept away from to the internal thread pipe head, the fixed transition ring that is provided with of one end of venous pipe. Disclosed is a superior vena cava cannula for extracorporeal circulation, which can perform auxiliary winding and adjust venous tube flow, and which is structurally stable and more durable.
Description
Technical Field
The utility model relates to a superior vena cava cannula technical field especially relates to a superior vena cava cannula for extracorporeal circulation.
Background
Extracorporeal circulation is a life support technique in which cardiovenous blood is drained to the outside of the body by a series of special artificial devices, and is returned to the arterial system in the body after gas exchange, temperature regulation and filtration by an artificial method. In the extracorporeal circulation process, the artificial device replaces the functions of the human body, so the heart-lung bypass is also called, and the extracorporeal circulation machine is also called as an artificial heart-lung machine, and the aim of extracorporeal circulation is to maintain the blood supply of tissues and organs of the whole body when the open-heart surgery is carried out.
When a valve replacement operation is performed under an endoscope and extracorporeal circulation in extracorporeal circulation, the operation time can be shortened through the internal jugular vein depredation instrument and the superior vena cava intubation tube, but the quality of the existing superior vena cava intubation tube is poor, the flow is difficult to control and adjust, and meanwhile, a puncture sheath is not matched, so that the operation is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the epicoele intubate who provides for extrinsic cycle, this epicoele intubate can adjust flow to easy operation, it is more stable, still possess the effect of supplementary winding vein pipe simultaneously, effectual increase treatment effeciency.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a superior vena cava cannula for extracorporeal circulation comprises a binding mechanism and a three-way valve, wherein three outlets of the three-way valve are respectively and fixedly provided with a first connector, a second connector and a third connector, one ends of the second connector and the third connector are both in threaded sleeve joint with a sealing mechanism, one end of the first connector is fixedly connected with a venous catheter, and a reinforcing silk thread is spirally embedded in the venous catheter;
an internal thread pipe head is sleeved in an internal thread at one end of the venous pipe, a puncture sheath is fixedly arranged at one end, far away from the venous pipe, of the internal thread pipe head, and a transition ring is fixedly arranged at one end of the venous pipe;
the binding mechanism comprises a positioning ring, a cotton clamping ring is fixedly sleeved inside the positioning ring, a second elastic cloth belt and a first elastic cloth belt are fixedly arranged at the upper end and the lower end of the positioning ring respectively, a triangular buckle body is hinged to one side of the positioning ring close to the upper end and the lower end, an annular groove is formed in the middle of one side of the positioning ring, and limiting sliding grooves are formed in the upper bottom surface and the lower top surface of the annular groove;
through above-mentioned technical scheme, this superior vena cava cannula can adjust the flow to easy operation is more stable, still possesses the effect of supplementary winding vein pipe simultaneously, effectual increase treatment effeciency.
Furthermore, the sealing mechanism comprises an internal thread cover, a sealing plug is fixedly arranged inside the internal thread cover, and a rubber sealing ring is fixedly sleeved on a cylinder body at one end, far away from the internal thread cover, of the sealing plug;
through above-mentioned technical scheme, play double sealing's efficiency through the rubber seal on internal thread lid and the sealed stopper post, its sealed effect is stronger.
Furthermore, the transition ring is movably sleeved on the sheath body of the puncture sheath;
through above-mentioned technical scheme, the transition ring plays the excessive effect of buffering, prevents that the puncture sheath from having the ladder thickness to influence the treatment because between puncture sheath and the venous line when the puncture.
Further, a valve hand wheel is fixedly arranged at the front end of the three-way valve;
through above-mentioned technical scheme, conveniently operate the three-way valve through the valve hand wheel.
Further, a buckle is arranged at the lower end of the first elastic cloth belt;
through above-mentioned technical scheme, the buckle plays fixed effect.
Furthermore, limiting slide blocks are arranged inside the two limiting slide grooves in a sliding mode, an extending column is fixedly arranged between the two limiting slide blocks, and a clamping ring is fixedly arranged at one end, far away from the positioning ring, of the extending column;
through above-mentioned technical scheme, the extension post extends the extension and is used for twining the venous line, and is all very convenient when using and saving.
Furthermore, an annular triangular buckle groove is formed in the column body of the extending column close to one end of the positioning ring, and spring telescopic rods are fixedly arranged between the two limiting sliding blocks and the inner wall of the limiting sliding groove;
through the technical scheme, the spring telescopic rod utilizes the elasticity of the spring to conveniently pull the extension column to return to the original position, and the triangular buckle body is conveniently clamped in the annular triangular buckle groove when being pulled out.
Furthermore, a plurality of buckling holes are formed in the belt body of the second elastic cloth belt, and a belt ring is movably sleeved on the belt body of the first elastic cloth belt;
through the technical scheme, the second elastic cloth belt is conveniently bound by the belt ring.
The utility model discloses following beneficial effect has:
1. the utility model provides a superior vena cava cannula for extrinsic cycle, this superior vena cava cannula when using, strengthen the texture of venous pipe through strengthening the silk thread for the quality of venous pipe is higher, and is more durable, cooperates the flow that the three-way valve is used for controlling the venous pipe simultaneously, thereby makes this superior vena cava cannula more durable when using, and it is also more convenient to operate.
2. The utility model provides a superior vena cava cannula for extrinsic cycle, this superior vena cava cannula is when using, can be fixed vein pipe and patient through constraint mechanism according to the demand, or fixed with other objects, make the vein pipe more stable when using, be difficult for crooked, extend the post simultaneously and can extend out and twine the vein pipe, prevent that the vein pipe from influencing medical personnel's operation because of the overlength, and can fix the operation to the vein pipe under the effect of card cotton ring, and can also adjust, it is more convenient to operate.
3. The utility model provides a superior vena cava cannula for extrinsic cycle, this superior vena cava cannula can cooperate the puncture sheath when using to make medical personnel also can be safer when putting the pipe, also can be more convenient, and its puncture sheath can be dismantled simultaneously.
Drawings
Fig. 1 is a schematic front view of a superior vena cava cannula for extracorporeal circulation in accordance with the present invention;
fig. 2 is a front view of a restraining mechanism for a superior vena cava cannula for extracorporeal circulation in accordance with the present invention;
fig. 3 is a schematic axial view of a sealing mechanism for a superior vena cava cannula for extracorporeal circulation according to the present invention;
fig. 4 is a schematic view of a right cut-away end of a vena cava cannula for extracorporeal circulation according to the present invention;
fig. 5 is a front cross-sectional view of a positioning ring of a superior vena cava cannula for extracorporeal circulation in accordance with the present invention;
fig. 6 is a schematic partial front cross-sectional view of a venous tube of a superior vena cava cannula for extracorporeal circulation according to the present invention.
Illustration of the drawings:
1. a binding mechanism; 2. an intravenous tube; 3. a first connector; 4. puncturing the sheath; 5. a second connector; 6. a sealing mechanism; 7. a third connector; 8. a three-way valve; 9. a valve hand wheel; 10. an internal thread pipe head; 11. a transition ring; 12. a reinforcing thread; 101. a positioning ring; 102. a belt ring; 103. a buckle; 104. a first elastic cloth belt; 105. buckling holes; 106. a second elastic cloth belt; 107. a limiting slide block; 108. a ring groove; 109. a spring telescopic rod; 110. a snap ring; 111. a triangular buckle body; 112. extending the column; 113. an annular triangular buckle slot; 114. a limiting chute; 115. cotton clamping rings; 601. an internally threaded cap; 602. a rubber seal ring; 603. and sealing the plug.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides an embodiment: a superior vena cava cannula for extracorporeal circulation comprises a binding mechanism 1 and a three-way valve 8, wherein three outlets of the three-way valve 8 are respectively and fixedly provided with a first connector 3, a second connector 5 and a third connector 7, one ends of the second connector 5 and the third connector 7 are respectively in threaded sleeve joint with a sealing mechanism 6, one end of the first connector 3 is fixedly connected with a venous tube 2, a reinforcing silk thread 12 is embedded into the venous tube 2 in a spiral shape, and the reinforcing silk thread 12 is used for reinforcing the structure of the venous tube 2;
an internal thread pipe head 10 is sleeved in one end of the intravenous tube 2 through internal threads, the connection and the disassembly are convenient through the internal thread pipe head 10, a puncture sheath 4 is fixedly arranged at one end, far away from the intravenous tube 2, of the internal thread pipe head 10, and a transition ring 11 is fixedly arranged at one end of the intravenous tube 2;
constraint mechanism 1 includes holding ring 101, the fixed cover in inside of holding ring 101 is equipped with card cotton ring 115, the upper end and the lower extreme of holding ring 101 are fixed respectively and are provided with elastic woven tape 106 and elastic woven tape 104 No. two, one side of holding ring 101 is leaned on the upper end and is leaned on the lower extreme and all articulates and be provided with triangle knot body 111, in order to guarantee the stability that triangle knot body 111, the triangle is detained the face that body 111 and holding ring 101 contact and can be set up the buckle and connect the cooperation articulated, it is more convenient to use, holding ring 101 one side middle part department has seted up annular 108, spacing spout 114 has all been seted up to the last bottom surface and the lower top surface of annular 108, this epicoele intubate can adjust the flow, and easy operation, it is more stable, still possess the effect of supplementary winding intravenous line 2 simultaneously, effectual increase treatment effeciency.
The lower extreme of an elastic strap 104 is provided with buckle 103, buckle 103 plays fixed effect, the inside of two spacing chutes 114 all slides and is provided with limiting slide block 107, it extends post 112 to fix being provided with between two limiting slide block 107, it is fixed and is provided with snap ring 110 to extend the post 112 and keep away from the fixed one end of holding ring 101, it extends the extension and is used for twining venous duct 2 to extend post 112, it is all very convenient when using and saving, it has seted up triangle catching groove 113 on the shaft that extension post 112 is close to holding ring 101 one end, all fix being provided with spring telescopic link 109 between two limiting slide block 107 and the spacing chute 114 inner wall, spring telescopic link 109 utilizes the convenient pulling of the elasticity of spring to extend post 112 and returns the normal position, and be convenient for triangle fastening body 111 card in triangle catching groove 113 drawing out, a plurality of buttonholes 105 have been seted up on No. two elastic strap 106's the belt shaft, the movable sleeve is equipped with belt 102 on No. one elastic strap 104's belt shaft, belt 102 conveniently ties No. two elastic strap 106.
The working principle is as follows: when using, according to the demand, bind through an elastic cloth area 104 and No. two elastic cloth area 106, thereby can fix through buckle 103 cooperation knot hole 105 and restraint venous line 2, increase venous line 2's stability, when venous line 2 overlength, pulling snap ring 110 pulls out extension post 112, this moment because can make extension post 112 have the tendency that returns the normal position under the spring action at spring telescopic link 109, at this moment just need stir triangle knot body 111, it fixes extension post 112 to buckle body 111 card at annular triangle in the groove 113, then venous line 2 of overlength can twine on extension post 112, when the patient has assembled the use, can be through three-way valve 8 control flow, and load puncture sheath 4 can also can be safer when putting the pipe, also can be more convenient.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (8)
1. A superior vena cava cannula for extracorporeal circulation, comprising a restriction mechanism (1) and a three-way valve (8), characterized in that: a first connector (3), a second connector (5) and a third connector (7) are fixedly arranged at three outlets of the three-way valve (8) respectively, one ends of the second connector (5) and the third connector (7) are both in threaded sleeve joint with a sealing mechanism (6), one end of the first connector (3) is fixedly connected with a venous tube (2), and a reinforcing silk thread (12) is embedded into the venous tube (2) in a spiral shape;
an internal thread tube head (10) is sleeved in one end of the venous tube (2) in a threaded manner, a puncture sheath (4) is fixedly arranged at one end, far away from the venous tube (2), of the internal thread tube head (10), and a transition ring (11) is fixedly arranged at one end of the venous tube (2);
constraint mechanism (1) is including holding ring (101), the fixed cover in inside of holding ring (101) is equipped with card cotton ring (115), the upper end and the lower extreme of holding ring (101) are fixed respectively and are provided with No. two elastic woven belt (106) and an elastic woven belt (104), one side of holding ring (101) is leaned on the upper end and is leaned on the lower extreme and all articulates and be provided with triangle knot body (111), holding ring (101) one side middle part department has seted up annular (108), spacing spout (114) have all been seted up to the last bottom surface and the lower top surface of annular (108).
2. A superior vena cava cannula for extracorporeal circulation according to claim 1, wherein: sealing mechanism (6) include internal thread lid (601), the inside fixed sealing plug post (603) that is provided with of internal thread lid (601), fixed cover is equipped with rubber seal (602) on the one end shaft of internal thread lid (601) is kept away from in sealing plug post (603).
3. A superior vena cava cannula for extracorporeal circulation according to claim 1, wherein: the transition ring (11) is movably sleeved on the sheath body of the puncture sheath (4).
4. A superior vena cava cannula for extracorporeal circulation according to claim 1, wherein: and a valve hand wheel (9) is fixedly arranged at the front end of the three-way valve (8).
5. A superior vena cava cannula for extracorporeal circulation according to claim 1, wherein: the lower end of the first elastic cloth belt (104) is provided with a buckle (103).
6. A superior vena cava cannula for extracorporeal circulation according to claim 1, wherein: two the inside of spacing spout (114) all slides and is provided with spacing slider (107), two fixed extension post (112) that is provided with between spacing slider (107), the one end that the holding ring (101) was kept away from in extension post (112) is fixed and is provided with snap ring (110).
7. A superior vena cava cannula for extracorporeal circulation according to claim 6, wherein: an annular triangular buckle groove (113) is formed in the column body, close to one end of the positioning ring (101), of the extension column (112), and a spring telescopic rod (109) is fixedly arranged between the two limiting sliding blocks (107) and the inner wall of the limiting sliding groove (114).
8. A superior vena cava cannula for extracorporeal circulation according to claim 1, wherein: a plurality of buckle holes (105) are formed in the belt body of the second elastic cloth belt (106), and a belt ring (102) is movably sleeved on the belt body of the first elastic cloth belt (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222590913.6U CN218870945U (en) | 2022-09-29 | 2022-09-29 | Superior vena cava cannula for extracorporeal circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222590913.6U CN218870945U (en) | 2022-09-29 | 2022-09-29 | Superior vena cava cannula for extracorporeal circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218870945U true CN218870945U (en) | 2023-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222590913.6U Active CN218870945U (en) | 2022-09-29 | 2022-09-29 | Superior vena cava cannula for extracorporeal circulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218870945U (en) |
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- 2022-09-29 CN CN202222590913.6U patent/CN218870945U/en active Active
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