CN217219849U - Device for clamping fixed sleeve needle catheter in middle section for distance - Google Patents
Device for clamping fixed sleeve needle catheter in middle section for distance Download PDFInfo
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- CN217219849U CN217219849U CN202120206047.9U CN202120206047U CN217219849U CN 217219849 U CN217219849 U CN 217219849U CN 202120206047 U CN202120206047 U CN 202120206047U CN 217219849 U CN217219849 U CN 217219849U
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- catheter
- puncture needle
- clamping block
- puncture
- needle tube
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Abstract
The embodiment of the utility model provides a device for clamping the distance between a fixed sleeve needle catheter and a needle holder in the middle section, which comprises a puncture needle tube, a handle guide rail and a needle holder, wherein the puncture needle tube is fixedly arranged on the needle holder, and the needle holder is fixedly arranged on the handle guide rail, so that the puncture needle tube and the handle guide rail are kept relatively static; the catheter is slidably sleeved on the puncture needle tube, and the tearable seat sleeve is fixedly arranged on the handle guide rail; the tearable seat sleeve is provided with a fixing structure, and the fixing structure is used for clamping the catheter, so that the puncture needle tube and the catheter are kept relatively static. The utility model discloses a can tear the seat and sheathe the fixed knot who sets up and have the clamping function and construct, can realize that puncture needle tubing and pipe press from both sides tightly fixedly at the middle section part, also the distance of a rice distance size keeps unchangeable, and overall structure design is simple reasonable, and the sleeve needle pipe can fix a rice distance better when carrying out the puncture operation, plays and is showing the effect that improves the puncture success rate.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to thereby optimize device of fixed cover needle pipe distance of fixed sleeve needle pipe structure realization.
Background
The trocar catheter is a device in which a catheter is sleeved on a puncture needle, passes through tissues such as skin, fat layer and the like together with the puncture needle, is sent into a blood vessel, enters the blood vessel, and then is withdrawn out of the puncture needle, so that the front end of the catheter is left in the blood vessel. Wherein the Lai distance is the distance from the lower tangent line of the needle tip bevel of the puncture needle to the upper tangent plane of the catheter tip. Because the catheter enters the blood vessel together with the puncture needle, the distance must be fixed to ensure that the catheter enters the blood vessel along with the puncture needle.
Since the trocar catheter is withdrawn after entering the blood vessel, the catheter and the puncture needle must be slidable relative to each other, i.e. the size of the puncture distance is variable. However, in order to search for a blood vessel, the trocar catheter inevitably passes through tissues such as skin and muscle during the puncturing operation, so that the problem that the puncture catheterization fails because the tip of the catheter wraps the needle point of the puncture needle (the puncturing is difficult) or the tip of the catheter is too late (the distance is large, the catheter cannot really enter the blood vessel) due to the wrapping of the tissues such as skin and muscle occurs. In addition, when the puncture needle and the catheter are long, the catheter can be stretched and contracted during the puncture process due to the elastic action of the catheter, so that the puncture distance is changed. And the longer the catheter is, the greater the change of the levee distance caused by the extension and contraction of the catheter during the puncture is, so that the effect of fixing the levee distance only by the catheter hub is not obvious.
Therefore, there is a need in the art to design a device that can further optimize the structure to secure the trocar catheter for the desired distance.
SUMMERY OF THE UTILITY MODEL
To above defect and not enough, the utility model provides a middle section presss from both sides tight device of fixed cover needle pipe distance of lai, this middle section presss from both sides tight device of fixed cover needle pipe distance of lai has that structural design is simple reasonable, the lai distance of trocar catheter can further obtain fixed and can further improve the characteristics of puncture success rate.
The utility model provides a device that fixed cover needle pipe rice distance is pressed from both sides to middle section, its characterized in that includes:
the puncture needle tube is fixedly arranged on the needle seat, and the needle seat is fixedly arranged on the hand-shaking guide rail, so that the puncture needle tube and the hand-shaking guide rail are kept relatively static, namely the fixing structure clamps the catheter on the catheter and keeps the puncture needle tube and the catheter relatively static;
the catheter is slidably sleeved on the puncture needle tube, and the tearable seat sleeve is fixedly arranged on the handle guide rail;
wherein, the tearable socket sleeve is provided with a fixing structure, and the fixing structure is used for clamping the catheter so as to keep the puncture needle tube and the catheter relatively static.
Further, the fixing structure comprises a first clamping block and a second clamping block, and the first clamping block and the second clamping block are respectively arranged on two sides of the conduit;
wherein the first clamping block and the second clamping block are used for providing opposite clamping force for the catheter so as to keep the puncture needle tube and the catheter relatively still.
Further, the first clamping block and the second clamping block are symmetrically arranged on two sides of the conduit.
Further, the first clamping block and the second clamping block are both made of soft materials.
Furthermore, the fixing structure comprises an inner clamping block, the inner clamping block is provided with a first V-shaped groove, and the guide pipe and the puncture needle tube are arranged in the first V-shaped groove;
wherein the inner clamping block is used for providing clamping force for the catheter so as to keep the puncture needle tube and the catheter still relatively.
Furthermore, the fixing structure further comprises an outer clamping block, the outer clamping block is provided with a second V-shaped groove, and the inner clamping block is arranged in the second V-shaped groove;
the outer clamping block is used for providing clamping acting force for the inner clamping block, so that the inner clamping block clamps the catheter.
Further, the inner clamping block is made of soft materials.
Furthermore, the puncture needle device also comprises a catheter seat, wherein the catheter is fixedly arranged on the catheter seat, and the catheter seat are sleeved on the puncture needle tube in a sliding manner.
Further, the catheter hub is detachably and fixedly arranged on the needle hub, so that the puncture needle tube and the catheter are kept relatively static.
The utility model provides a device for clamping the distance between the fixed sleeve needle catheter and the needle holder in the middle section, which comprises a puncture needle tube, a handshake guide rail and a needle holder, wherein the puncture needle tube, the needle holder and the handshake guide rail are respectively and fixedly connected, thereby keeping the puncture needle tube and the handshake guide rail relatively fixed; the catheter is slidably sleeved on the puncture needle tube, the tearable seat sleeve is fixedly arranged on the handle guide rail, and after the puncture operation is completed, the puncture needle tube can slide relative to the catheter, so that the puncture needle tube is drawn out of the catheter, and the catheter placement is completed. Particularly, in the process of puncture operation, because the tissues such as skin, muscle and the like have wrapping resistance and the catheter has an elastic effect, when the puncture needle tube and the catheter are long, the catheter can be deformed in a telescopic manner in the puncture process, so that the needle point distance is changed, and the puncture success rate is influenced. Meanwhile, the longer the catheter is, the greater the change of the rice distance caused by the extension and contraction of the catheter during puncturing is, and therefore, the effect of fixing the rice distance by only using the catheter holder is not obvious.
And in the technical scheme of the utility model, can tear the seat cover through setting up on the guide rail of shaking hands, and can tear the seat cover and set up fixed knot structure, and set up fixed knot structure in the middle part region of pipe and puncture needle tubing, make fixed knot structure can press from both sides the middle section of tight pipe and puncture needle tubing when the trocar catheter carries out the puncture operation, thereby realize the relative static between pipe and the puncture needle tubing or fix, make the distance of a rice size remain unchanged, show the success rate that improves the puncture of trocar catheter, avoid only fixing the obscure problem of effect of the distance of a rice through the pipe seat. In addition, as the guide tube is slidably sleeved on the puncture needle tube, after the trocar guide tube completes puncture operation, the fixing structure can be loosened to ensure that the trocar guide tube does not clamp the guide tube and the puncture needle tube any more, and then the puncture needle tube is drawn out from the guide tube in a sliding way, so that the guide tube is left in a human body to complete tube placement.
Therefore, the utility model provides a device that fixed cover catheter lai distance is pressed from both sides to middle section is compared in prior art, has beneficial effect at least:
firstly, the fixing structure with the clamping function is arranged on the tearable seat sleeve, so that the puncture needle tube and the catheter can be clamped and fixed at the middle section part, namely, the size of the Lai distance is kept unchanged, and the whole structure design is simple and reasonable;
secondly, the fixing structure is arranged in the middle section area of the catheter to clamp and fix the catheter, so that the trocar catheter of the utility model can better fix the puncture distance when in puncture operation, and the puncture success rate is obviously improved;
after the puncture operation is completed, the puncture needle tube and the catheter can slide relatively by loosening the fixing structure, and the puncture needle tube can be drawn out from the catheter in a sliding manner to complete the tube placement, so that the operation is simple and convenient.
Drawings
Fig. 1(a) and (b) are respectively a schematic structural diagram and a partially enlarged schematic view of a device for clamping and fixing a needle catheter by a predetermined distance at a middle section according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a device for clamping and fixing the needle catheter by a predetermined distance at the middle section according to a second embodiment of the present invention;
FIG. 3 is a schematic sectional view taken along line A-A of FIG. 2;
description of the reference numerals: 1. a puncture needle tube; 2. a conduit; 3. a seat cover can be torn; 4. a handshake guide rail; 5. a catheter hub; 6. a needle seat; 7. a first clamping block; 8. a second clamp block; 9. an outer clamping block; 10. an inner clamping block.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-3, according to the embodiment of the present invention, the device for fixing the distance between the trocar catheter and the middle section of the catheter by clamping comprises the puncture needle tube 1, the guide rail 4 and the needle seat 6, the puncture needle tube 1 is fixedly arranged on the needle seat 6, and the needle seat 6 is fixedly arranged on the guide rail 4, so that the puncture needle tube 6 and the guide rail 4 are kept relatively still. Particularly, puncture needle tubing 1, needle file 6 and the guide rail 4 three of shaking hands are fixed connection respectively to make puncture needle tubing 1 and shake hands and keep relatively fixed between the guide rail 4, shake hands guide rail 4 and be used for supplying the user to hold with the hand, thereby convenience of customers accomplishes the puncture operation.
The device for clamping the fixed sleeve needle tube by the middle section also comprises a tube 2 and a tearable seat sleeve 3, wherein the tube 2 is slidably sleeved on the puncture needle tube 1, and the tearable seat sleeve 3 is fixedly arranged on a handle guide rail 4. Because the catheter 2 is slidably sleeved on the puncture needle tube 1, after the trocar catheter finishes puncture operation, the puncture needle tube 1 can slide relative to the catheter 2, so that the puncture needle tube 1 can be drawn out from the catheter 2, and catheterization is finished.
In the embodiment of the present invention, the seat cover 3 is provided with a fixing structure, and the fixing structure is used for clamping the catheter 2, so as to keep the puncture needle tube 1 and the catheter 2 relatively still or fixed, i.e. the fixing structure clamps the catheter 2 on the catheter 2 and keeps the puncture needle tube 1 and the catheter 2 relatively still. Particularly, through set up on the guide rail 4 of shaking hands and tear seat cover 3, and set up fixed knot on can tearing seat cover 3 and construct, and set up fixed knot structure in the middle-stage part region of pipe 2 and puncture needle tubing 1, make fixed knot construct the middle section that can press from both sides tight pipe 2 and puncture needle tubing 1 when the trocar catheter carries out the puncture operation, thereby realize the relative static between pipe 2 and the puncture needle tubing 1 or fix, make needle point lai distance n size remain unchanged, and then show the success rate that improves the trocar catheter puncture, avoid only fixing lai distance n through the pipe seat of pipe 2 tip and lead to fixed effect obscure problem. In addition, because the catheter 2 is slidably sleeved on the puncture needle tube 1, after the trocar catheter finishes puncture operation, the fixing structure can be loosened to ensure that the catheter 2 and the puncture needle tube 1 are not clamped any more, and then the puncture needle tube 1 is pulled out from the catheter 2 in a sliding way, so that the catheter 2 is left in a human body to finish tube placement.
The first embodiment is as follows:
referring to fig. 1, in the first embodiment of the present invention, the fixing structure includes a first clamping block 7 and a second clamping block 8, and the first clamping block 7 and the second clamping block 8 are respectively disposed on two sides of the catheter 2. Wherein the first clamping block 7 and the second clamping block 8 are used for providing opposite clamping force for the conduit 2, so that the puncture needle tube 1 and the conduit 2 are kept relatively still or fixed. In the solution of this embodiment, the tearable sleeve 3 is provided with the first clamping block 7 and the second clamping block 8, and the first clamping block 7 and the second clamping block 8 are respectively arranged on two sides of the catheter 2, so that the two clamping blocks can apply stress on the outer surface of the catheter 2. When the puncture operation is performed, the first clamping block 7 and the second clamping block 8 are pressed forcibly according to the direction of an arrow h shown in fig. 1, so that the two clamping blocks respectively provide opposite clamping acting forces for the catheter 2, the middle section of the catheter 2 is clamped, and the needle point distance n is ensured to be kept unchanged, thereby significantly improving the success rate of trocar catheter puncture and avoiding the problem that the fixing effect is not obvious because the distance n is fixed only through the catheter seat at the end part of the catheter 2. In addition, when the stress applied to the first clamping block 7 and the second clamping block 8 is removed, the first clamping block 7 and the second clamping block 8 no longer clamp the catheter 2, and the catheter 2 can slide on the puncture needle tube 1, so that the puncture needle tube 1 can be slidingly drawn out from the catheter 2, and the catheter 2 is left in the human body to finish the catheterization.
In a preferred version of this embodiment, the first clamp block 7 and the second clamp block 8 are arranged symmetrically to each other on both sides of the conduit 2. In the preferred scheme, through the mutual symmetrical structural design mode of the first clamping block 7 and the second clamping block 8, when the first clamping block 7 and the second clamping block 8 are pressed, the clamping action stress of the first clamping block 7 on the catheter 2 and the clamping action stress of the second clamping block 8 on the catheter 2 are positioned on the same straight line, so that the middle sections of the fixed catheter 2 and the puncture needle tube 1 are better clamped, the needle point distance n is kept unchanged, the success rate of trocar catheter puncture is improved, and the situation that the clamping blocks slip or are staggered when the clamping action stresses of the two clamping blocks on the catheter 2 are not on the same straight line to press the catheter 2 is avoided.
In a further version of this embodiment, the first clamp block 7 and the second clamp block 8 are both soft materials. In this further arrangement, the first and second clamping blocks 7 and 8, respectively, are in direct contact with the conduit 2 when the first and second clamping blocks 7 and 8 are compressed, thereby providing a clamping force to the conduit 2. Therefore, in order to protect the structure of the catheter 2 during the trocar catheter puncture operation of the present invention, the first clamping block 7 and the second clamping block 8 are made of soft materials, so as to reduce the structural damage of the first clamping block 7 to the catheter 2 and the second clamping block 8 to the catheter 2.
The second embodiment:
referring to fig. 2 and 3, in a second embodiment of the present invention, the fixing structure comprises an inner clamping block 10, the inner clamping block 10 is provided with a first V-shaped groove, and the catheter 2 and the puncture needle tube 1 are arranged in the first V-shaped groove. Wherein the inner clamping block 10 is used for providing clamping force for the conduit 2 so as to keep the puncture needle tube 1 and the conduit 2 relatively still. In the embodiment of the present invention, the inner clamping block 10 is disposed on the seat cover 3 to be tearable, and the conduit 2 is disposed in the first V-shaped groove of the inner clamping block 10, so that the outer surface of the conduit 2 is stressed by the inner clamping block 10. More specifically, when the puncture operation is performed, the two sides of the inner clamping block 10 are pressed by force, so that the two sides of the inner clamping block 10 provide clamping acting force for the catheter 2, and the middle section of the catheter 2 is clamped to ensure that the needle point distance n is kept unchanged, thereby significantly improving the success rate of trocar catheter puncture and avoiding the problem that the fixing effect is not obvious because the distance n is fixed only by the catheter seat at the end part of the catheter 2. In addition, when the force is removed, the inner clamping block 10 no longer provides clamping force for the catheter 2, and the catheter 2 can slide on the puncture needle tube 1, so that the puncture needle tube 1 can be slidingly extracted from the catheter 2, and the catheter 2 is left in the human body to complete catheterization.
In a preferred scheme of the embodiment, the fixing structure further comprises an outer clamping block 9, the outer clamping block 9 is provided with a second V-shaped groove, and the inner clamping block 10 is arranged in the second V-shaped groove. Wherein the outer clamping block 9 is used to provide a clamping force to the inner clamping block 10, thereby causing the inner clamping block 10 to clamp the catheter 2. In the preferred scheme, the outer clamping block 9 is arranged on the seat sleeve 3 which can be torn, and the inner clamping block 10 is arranged in the second V-shaped groove of the outer clamping block 9, so that the outer clamping block 9 can apply acting stress to two sides of the inner clamping block 10, the inner clamping block 10 further applies acting stress to the outer surface of the conduit 2, and the middle section of the conduit 2 is clamped and fixed. Specifically, when the trocar catheter is punctured, the outer clamping block 9 and the inner clamping block 10 are pressed forcefully in the arrow q direction shown in fig. 3, so that the inner clamping block 10 moves along the second V-shaped groove of the outer clamping block 9, the outer clamping block 9 can provide a clamping acting force for the inner clamping block 10, the inner clamping block 10 further provides a clamping acting force for the catheter 2, and the catheter 2 is pressed and fixed, so that the needle point distance n is kept unchanged, and the success rate of trocar catheter puncturing is high. In addition, when the force is removed, the inner clamping block 10 and the outer clamping block 9 are not pressed tightly, the catheter 2 can slide on the puncture needle tube 1, and the puncture needle tube 1 can be drawn out from the catheter 2 in a sliding mode to complete catheterization.
In a further version of this embodiment, the inner block 10 is a soft material. In this further aspect, when the inner and outer clamp blocks 10 and 9 are compressed, both sides of the inner clamp block 10 are in direct contact with the pipe 2, thereby providing a clamping force to the pipe 2. Therefore, in order to protect the structure of the catheter 2 during the trocar catheter puncture procedure of the present invention, the inner clamping block 10 is made of soft material to reduce the structural damage to the catheter 2 caused by direct contact.
Preferably, referring to fig. 1 and 2, the device for clamping the fixed trocar tube for a predetermined distance at the middle section further comprises a tube holder 5, the tube 2 is fixedly arranged on the tube holder 5, and the tube 2 and the tube holder 5 are both slidably sleeved on the puncture needle tube 1. Particularly, pipe seat 5 is located the tip position of pipe 2, and pipe 2 is fixed to be set up on pipe seat 5, and the cover is established on puncture needle pipe 1 to the two slidable, works as the utility model discloses a puncture operation back is accomplished to the trocar pipe, puncture needle pipe 1 can with pipe 2, pipe seat 5 relative slip to can follow and take out puncture needle pipe 1 in pipe 2 and the pipe seat 5, accomplish and put the pipe.
Further, the catheter hub 5 is detachably and fixedly arranged on the needle hub 6, so that the puncture needle tube 1 and the catheter 2 are kept relatively static. Particularly, through with the fixed setting on needle file 6 of pipe seat 5 detachably, also the two detachably fixed connection together, can be in the utility model discloses a relative fixation between pipe 2 and the puncture needle pipe 1 is realized to the trocar catheter when carrying out the puncture operation to make the distance n of lai mai size remain unchanged. Through the structural design mode, the situation that the tip of the catheter 2 wraps the tip of the needle of the puncture needle tube 1 to cause puncture difficulty can be avoided under the wrapping resistance of tissues such as skin, muscle and the like, and the problem that the catheter 2 cannot really enter a blood vessel due to the fact that the tip of the catheter 2 makes the rice distance n larger too late is caused, so that puncture tube placement failure is caused, and the success rate of trocar catheter puncture is remarkably improved.
To sum up, the utility model provides a device that fixed cover needle pipe lai distance is pressed from both sides to middle section presss from both sides tightly through set up the fixed knot structure that has the tight function of clamp on can tearing seat cover 3, can realize that puncture needle tubing 1 and pipe 2 press from both sides tightly fixedly at the middle section part, also lai apart from the size to keep unchanged, overall structure design is simple reasonable. Simultaneously, set up fixed knot structure through the middle section region at pipe 2 and press from both sides tight fixed pipe 2, make the utility model discloses a sleeve needle pipe can fix the distance of lai better when carrying out the operation of puncturing, plays to show the effect that improves the puncture success rate. In addition, after the puncture operation is completed, the puncture needle tube 1 and the catheter 2 can slide relative to each other by loosening the fixing structure, and at the moment, the puncture needle tube 1 can be drawn out from the catheter in a sliding manner to complete the catheterization, so that the operation is simple and convenient.
Of course, the above is a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and decorations can be made without departing from the basic principle of the present invention, and these modifications and decorations are also considered to be within the scope of the present invention.
Claims (9)
1. The utility model provides a device that fixed cover needle pipe lai yuan is pressed from both sides to middle section, its characterized in that includes:
the puncture needle tube is fixedly arranged on the needle seat, and the needle seat is fixedly arranged on the handle guide rail, so that the puncture needle tube and the handle guide rail are kept relatively static;
the catheter is slidably sleeved on the puncture needle tube, and the tearable seat sleeve is fixedly arranged on the handle guide rail;
wherein the tearable sleeve is provided with a fixing structure for clamping the catheter so as to keep the puncture needle tube and the catheter relatively stationary, that is, the fixing structure clamps the catheter on the catheter so as to keep the puncture needle tube and the catheter relatively stationary.
2. The device of claim 1, wherein said fastening structure comprises a first clamp and a second clamp, said first clamp and said second clamp being disposed on opposite sides of said catheter;
wherein the first clamping block and the second clamping block are used for providing opposite clamping force for the catheter so as to keep the puncture needle tube and the catheter relatively still.
3. The device of claim 2 wherein said first and second blocks are symmetrically disposed on opposite sides of said catheter.
4. The device of claim 3, wherein said first and second clamping blocks are made of soft material.
5. The device of claim 1 wherein said holding structure comprises an inner clamp block, said inner clamp block having a first V-shaped groove, said catheter and said puncture needle being disposed in said first V-shaped groove;
wherein the inner clamping block is used for providing clamping force for the catheter so as to keep the puncture needle tube and the catheter still relatively.
6. The device of claim 5, wherein said holding structure further comprises an outer clamp block, said outer clamp block having a second V-shaped groove, said inner clamp block being disposed in said second V-shaped groove;
wherein the outer clamping block is used for providing clamping force for the inner clamping block so as to enable the inner clamping block to clamp the catheter.
7. The device of claim 6 wherein said inner clamp blocks are made of soft material.
8. The device of any of claims 1-7, further comprising a catheter hub, said catheter being fixedly mounted on said catheter hub, said catheter and said catheter hub both being slidably mounted on said trocar tube.
9. The device of claim 8 wherein said catheter hub is removably fixedly secured to said hub to maintain said puncture needle cannula and said catheter stationary relative to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120206047.9U CN217219849U (en) | 2021-01-25 | 2021-01-25 | Device for clamping fixed sleeve needle catheter in middle section for distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120206047.9U CN217219849U (en) | 2021-01-25 | 2021-01-25 | Device for clamping fixed sleeve needle catheter in middle section for distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217219849U true CN217219849U (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120206047.9U Active CN217219849U (en) | 2021-01-25 | 2021-01-25 | Device for clamping fixed sleeve needle catheter in middle section for distance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217219849U (en) |
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2021
- 2021-01-25 CN CN202120206047.9U patent/CN217219849U/en active Active
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