Arteriopuncture catheterization needle with high sealing performance

Abstract

The invention discloses a high-sealing arteriopuncture catheterization needle which comprises a catheterization needle body, the catheterization needle body comprises an outer needle head, an inner needle head arranged in the outer needle head and an outer catheter communicated with the outer needle head, and a connecting part is arranged on the outer catheter; the sealing assembly comprises a first sealing part arranged in the outer needle head and a second sealing part arranged on the external tube; according to the structure, the needle head is arranged in a split mode, then the needle head is arranged at the puncture position of the artery, infusion is convenient, multiple sealing is achieved through the structures, and a guide wire can be replaced for follow-up treatment in the follow-up process.

Description

Technical Field

[0001] The invention relates to the technical field of arterial puncture catheterization needles, and in particular to an arterial puncture catheterization needle with high sealing performance. Background Art

[0002] Clinically, critically ill patients need to monitor their arterial blood pressure in real time, and invasive blood pressure monitoring can continuously monitor the dynamic changes of arterial blood pressure and is not affected by artificial pressurization, decompression, cuff width and tightness. It is accurate and intuitive, and the value can be obtained at any time. It is helpful for medical staff to promptly detect instantaneous changes in arterial pressure in critically ill patients such as shock and massive bleeding, and adjust treatment in time. Therefore, medical staff usually use invasive blood pressure monitoring to monitor the patient's arterial blood pressure in real time.

[0003] During the implementation of invasive blood pressure testing, medical staff usually puncture and catheterize the patient's arterial puncture site. After the puncture and catheterization, the steel needle needs to be pulled out. During the process of pulling out the steel needle, due to the pressure difference, blood pressure will spray out of the patient's body, and the pulled out steel needle is more likely to cause danger to medical staff and cause safety accidents. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above problems existing in the existing arterial puncture catheter needle with high sealing performance, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide an arterial puncture catheter needle with high sealing performance.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an arterial puncture catheter needle with high sealing performance, comprising: a catheter needle body, including an outer needle head, an inner needle head arranged in the outer needle head, and an external tube connected to the outer needle head, wherein the external tube is provided with a connecting component; and a sealing assembly, comprising a first sealing component arranged in the outer needle head and a second sealing component arranged on the external tube.

[0008] As a preferred solution of the highly sealed arterial puncture catheter needle of the present invention, the outer needle head is provided with a perforation, the inner needle head is clamped in the perforation, the rear end of the outer needle head is provided with a clamping ring, the rear end of the inner needle head is provided with a stopping block, the stopping block is provided with a matching retaining ring that cooperates with the clamping ring, and the second sealing component is provided on the matching retaining ring.

[0009] As a preferred embodiment of the highly sealed arterial puncture catheter needle of the present invention, the outer needle head comprises a main needle body and a catheter needle tube connected to the main needle body, the first sealing component comprises an outer tube disposed in the main needle body, The outer tube comprises a fixing portion connected to the inner tube, an expansion portion connected to the fixing portion, and a functional portion connected to the expansion portion. An expansion component is arranged in each expansion portion, and a connecting layer is arranged between the expansion portions.

[0010] As a preferred embodiment of the highly sealing arterial puncture catheter needle of the present invention, the expansion component includes an expansion cavity opened in the expansion part, a first expansion rod hinged in the expansion cavity, and a second expansion rod hinged to the first expansion rod.

[0011] As a preferred embodiment of the highly sealing arterial puncture catheter needle described in the present invention, the first expansion rod and the second expansion rod are made of memory alloy, one end of the first expansion rod and the second expansion rod is provided with a first joint, and the other end of the first expansion rod and the second expansion rod is provided with a second joint, and the first joint and the second joint are respectively provided with a first socket and a second socket, and the diameter of the first socket is smaller than that of the second socket.

[0012] As a preferred solution of the highly sealed arterial puncture catheter needle described in the present invention, the first joint is provided with a first spiral groove, one end of the first spiral groove is provided with a first clamping groove, the end of the first spiral groove away from the first clamping groove is provided with a first baffle, and the inner wall of the expansion cavity is provided with an auxiliary seal.

[0013] As a preferred solution of the high-sealing arterial puncture catheter needle described in the present invention, the auxiliary sealing member includes a plurality of connecting monomers which are connected to each other end to end, the connecting monomers are hinged to each other, the connecting monomers include a first connecting rod, a sleeve block connected to the end of the first connecting rod, two second connecting rods hinged on the sleeve block, and an intermediate strip arranged at the end of the second connecting rod, the intermediate strip is made of copper alloy, the sleeve block is provided with a mating opening for mating with the first connecting rod, and the first connecting rod is provided with a mounting end at one end away from the sleeve block.

[0014] As a preferred solution of the high-sealing arterial puncture catheter needle described in the present invention, the second sealing component includes a connecting ring connected to the rear end of the auxiliary seal, a plurality of driving ribs rotatably connected to the connecting ring, and a blocking plate arranged on the driving ribs, a plurality of the blocking plates are provided with arc openings, each of the driving ribs can be rotated independently, a plurality of the arc openings are spliced ​​into a circular hole, and a flexible belt is provided on the driving ribs.

[0015] As a preferred solution of the highly sealing arterial puncture catheter needle described in the present invention, the lower end of the flexible belt is connected to the connecting clamp, each of the flexible belts is arranged in contact with the surface of the driving rib, and several of the flexible belt ends are provided with sealing circular pads, which are stuck in the circular holes.

[0016] As a preferred solution of the highly sealing arterial puncture catheter needle of the present invention, the end of the first connecting rod is connected to the driving retaining edge.

[0017] The beneficial effects of the present invention are as follows: when performing puncture, the operator pulls off the protective cover at the front end, then inserts the inner needle from the rear end of the main needle body, inserts it into the outer needle, and extends it out from the outer needle, and then the puncture operation can be performed.

[0018] After pulling out the inner needle, the operator rotates it forward, which then drives the second joint to rotate, and then unscrews the block from the first slot, and then pulls out the inner pillow backwards, and the second joint will move away from the first joint as the inner needle moves, thereby causing the first expansion rod and the second expansion rod to change from a state of being close to each other to a state of being far away from each other, and then pulling open the expansion cavity, transforming the original spherical shape into a spindle-like shape, and then allowing the expansion cavity to seal the rear end of the inner needle in the main needle body.

[0019] When the expansion chamber is compressed, the auxiliary seal will be squeezed synchronously, causing several second connecting rods to rotate, so that the second connecting rods are closer to the first connecting rod after rotation, and then the entire auxiliary seal will be compressed. As the second joint moves, it will be sleeved onto the end of the driving rib close to the connecting clamp, and then several driving ribs will be gathered together. Because the driving ribs extend along the length direction of the main needle body, when the driving ribs gather together, a single driving rib rotates in the direction of approaching, and after rotation, the auxiliary seal will be pushed outward as a whole and pushed to the end of the inner needle head to achieve sealing.

[0020] After puncturing the artery, the operator can pull out the inner needle as needed, replace the treatment guide wire, and then fix the treatment guide wire on the fixed component, and then insert the guide wire. When inserting the guide wire, it can pass through the circular hole formed by the arc-shaped opening on the blocking plate, extend forward, pass through the auxiliary seal, and then pass out from the outer needle to enter the artery.

[0021] This structure separates the needle into parts, thereby allowing the needle to be placed at the puncture site of the artery for convenient infusion. The above-mentioned structures achieve multiple seals, and the guide wire can be replaced later for subsequent treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 The figure is a schematic diagram of the overall structure of the arterial puncture catheter needle with high sealing performance of the present invention.

[0023] Figure 2 This is a schematic diagram of the outer needle and the inner needle of the arterial puncture catheter needle with high sealing performance of the present invention.

[0024] Figure 3 This is a schematic diagram of the internal structure of the main needle body of the highly sealed arterial puncture catheter needle of the present invention.

[0025] Figure 4 The figure is a schematic diagram of the internal structure of the expansion part of the arterial puncture catheter needle with high sealing performance of the present invention.

[0026] Figure 5 The high-sealing arterial puncture catheter needle of the present invention is described Figure 4 Enlarged schematic diagram of part A in the middle.

[0027] Figure 6 It is a schematic structural diagram of the highly airtight arterial puncture catheter needle of the present invention when the inner needle is withdrawn.

[0028] Figure 7 The high-sealing arterial puncture catheter needle of the present invention is described Figure 6 Enlarged schematic diagram of part B in the middle.

[0029] Figure 8 It is a schematic diagram of the expansion part of the arterial puncture catheter needle with high sealing performance of the present invention. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Example 1

[0035] Reference Figure 1-8 The present invention discloses an arterial puncture catheter needle with high sealing performance, including a catheter needle body 100. In this embodiment, the catheter needle body 100 includes an outer needle head 101, an inner needle head 102 arranged in the outer needle head 101, and an external tube 103 connected to the outer needle head 101, and a connecting component is provided on the external tube 103.

[0036] Preferably, the connecting component includes a positive pressure cylinder arranged at the end of the external tube 103 and a positive pressure valve arranged in the positive pressure cylinder. A retaining ring 204 is arranged in the positive pressure cylinder. Two retaining rings 204 are arranged to limit the position of the positive pressure valve. At the same time, a connecting port is provided on the positive pressure cylinder, and a locking cap is connected to the connecting port by an external thread. When infusion is needed, the locking cap can be opened to carry out infusion.

[0037] Furthermore, the present invention also includes a sealing component 200 . In this embodiment, the sealing component 200 includes a first sealing component 201 disposed inside the outer needle 101 and a second sealing component 202 disposed on the external tube 103 .

[0038] Furthermore, it also includes an external locking component, which is arranged on the external tube 103. The external locking component includes a clip arranged on the external tube 103, and the clip has a flexible buckle.

[0039] Furthermore, a through hole 203 is provided on the outer needle 101, the inner needle 102 is clamped in the through hole 203, a retaining ring 204 is provided at the rear end of the outer needle 101, a stopping block 205 is provided at the rear end of the inner needle 102, a matching retaining ring 206 that cooperates with the retaining ring 204 is provided on the stopping block 205, and the second sealing component 202 is provided on the matching retaining ring 206.

[0040] In this embodiment, the outer needle 101 includes a main needle body 101a and a catheter needle tube 101b connected to the main needle body 101a, and the first sealing component 201 includes an outer tube 207 disposed in the main needle body 101a.

[0041] Furthermore, the outer tube 207 includes a fixing portion 207a connected to the inner tube 208, the fixing portion 207a is arranged at the end of the inner tube 208 and fixed to the outer surface of the inner tube 208, and then the expansion portion 207b is connected to the fixing portion 207a, and there are multiple expansion portions 207b, each of which is in the shape of an elliptical arc, and several expansion portions 207b form an ellipsoid, and the material of the expansion portion 207b is set to rubber and has a certain degree of stretchability. A connecting layer 207d is set between every two expansion portions 207b, and the entire material of the connecting layer 207d is also rubber, and a plurality of perforations 203 are opened on the connecting layer 207d, and the perforations 203 are used to allow the fistula fluid to flow out.

[0042] The functional part 207c is connected to the expansion part 207b, and an expansion part 207b component is arranged in each expansion part 207b. In the present embodiment, the expansion part 207b component includes an expansion cavity 301 opened in the expansion part 207b, and the expansion cavity 301 is opened along the overall shape of the expansion part 207b. A first expansion rod 302 and a second expansion rod 303 hinged to the first expansion rod 302 are hinged in the expansion cavity 301, and the second expansion rod 303 is hinged to the expansion part 207b near the fixed part 207a.

[0043] Furthermore, in the present embodiment, the support member includes an expansion portion 207b member disposed between the inner tube 208 and the outer tube 207, the expansion portion 207b member includes an expansion chamber 301 opened between the inner tube 208 and the outer tube 207, a second delivery chamber connected to the expansion chamber 301, and an air delivery pipeline connected to the second delivery chamber, wherein the material of the expansion chamber 301 is a flexible rubber material, which can be deformed as a whole to change its own volume, while the material of the second delivery tube is a hard rubber material, which cannot change its own volume by expansion.

[0044] Preferably, the material of the first expansion rod 302 and the second expansion rod 303 is memory alloy, and a first joint 304 is provided at one end of the first expansion rod 302 and the second expansion rod 303, and a second joint 305 is provided at the other end of the first expansion rod 302 and the second expansion rod 303, and a first socket 306 and a second socket 307 are respectively provided on the first joint 304 and the second joint 305, and the diameter of the first socket 306 is smaller than that of the second socket 307.

[0045] Furthermore, a clamping block 308 is provided on the outer wall of the inner needle 102, and a clamping edge 309 connected to the second joint 305 is provided on the clamping block 308. The clamping edge 309 is connected to the second joint 305 in the initial state, and a bend mark that is easy to break is provided between the clamping edge 309 and the second joint 305. After the inner needle 102 is completely pulled out, the connection between the clamping block 308 and the second joint 305 is disconnected, and an auxiliary sealing member 400 is provided on the inner wall of the expansion chamber 301.

[0046] Furthermore, the auxiliary seal 400 includes a plurality of connection monomers which are connected to each other end to end, and the connection monomers are hinged to each other. The connection monomers include a plurality of first connection rods 401 arranged in a circular array, a sleeve block 402 connected to the end of the first connection rod 401, two second connection rods 403 hinged on the sleeve block 402, and a middle strip 404 arranged at the end of the second connection rod 403. The middle strip 404 is arranged at an end away from the second connection rod 403, and both ends of the middle strip 404 are connected to the second connection rod 403. The middle strip 404 is made of copper alloy, and a mating opening for mating with the first connection rod 401 is opened on the sleeve block 402, and an installation end is provided at the end of the first connection rod 401 away from the sleeve block 402.

[0047] Furthermore, a connecting ball is provided at the installation end, and a spherical groove matching with the connecting ball is provided on the sleeve block 402, and the opening at the upper end of the spherical groove is smaller than the diameter of the connecting ball.

[0048] Furthermore, in the present embodiment, the second sealing component 202 includes a connecting ring 202a connected to the rear end of the auxiliary seal 400, a plurality of driving ribs 202b rotatably connected to the connecting ring 202a, and a blocking plate 202c arranged on the driving rib 202b, arc-shaped openings 202d are provided on the plurality of blocking plates 202c, each driving rib 202b can be rotated independently, a plurality of arc-shaped openings 202d are spliced ​​into a circular hole, and a flexible belt 202e is provided on the driving rib 202b.

[0049] Furthermore, the lower end of the flexible belt 202e is connected to the connecting clamp ring 202a, and each flexible belt 202e is arranged along the surface of the driving rib 202b. The ends of several flexible belts 202e are provided with sealing round gaskets, which are stuck in the round holes.

[0050] Furthermore, the end of the first connecting rod 401 is connected to the driving rib 202b.

[0051] Operation process: When performing puncture, the operator removes the protective cover at the front end, and then inserts the inner needle 102 from the rear end of the main needle body 101a, and inserts it into the outer needle 101, and extends it from the outer needle 101, and then the puncture operation can be performed.

[0052] After pulling out the inner needle 102, the operator rotates it forward, which drives the second joint 305 to rotate, and then unscrews the block 308 from the first slot, and then pulls out the inner pillow backwards, and the second joint 305 will move away from the first joint 304 as the inner needle 102 moves, so that the first expansion rod 302 and the second expansion rod 303 change from a state of being close to each other to a state of being away from each other, and then pull open the expansion cavity 301, transforming the original spherical shape into a spindle-like shape, and then the expansion cavity 301 is sealed to the rear end of the inner needle 102 in the main needle body 101a.

[0053] When the expansion chamber 301 is compressed, the auxiliary seal 400 will be squeezed synchronously, causing the plurality of second connecting rods 403 to rotate, so that the second connecting rods 403 are closer to the first connecting rod 401 after rotation, and then the entire auxiliary seal 400 will be compressed. As the second joint 305 moves, it will be sleeved onto the end of the driving rib 202b close to the connecting clamp 202a, and then the plurality of driving ribs 202b will be gathered together. Because the driving ribs 202b extend along the length direction of the main needle body 101a, when the driving ribs 202b are gathered together, a single driving rib 202b rotates in the direction of approaching, and after rotation, the auxiliary seal 400 will be pushed outward as a whole and pushed to the end of the inner needle head 102 to achieve sealing.

[0054] After puncturing the artery, the operator can pull out the inner needle 102 as needed, replace the treatment guide wire, and then fix the treatment guide wire on the fixing part 207a, and then insert the guide wire. When inserting the guide wire, it can pass through the circular hole formed by the arc-shaped opening 202d on the blocking plate 202c, and extend forward, pass through the auxiliary seal 400, and then pass out from the outer needle 101 to enter the artery.

[0055] This structure separates the needle into parts, thereby allowing the needle to be placed at the puncture site of the artery for convenient infusion. The above-mentioned structures achieve multiple seals, and the guide wire can be replaced later for subsequent treatment.

[0056] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0057] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0058] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An arterial puncture catheter needle with high sealing performance, characterized in that: include, The catheter needle body (100) comprises an outer needle (101), an inner needle (102) disposed inside the outer needle (101), and an external catheter (103) connected to the outer needle (101), wherein a connecting component is provided on the external catheter (103); and, The sealing assembly (200) comprises a first sealing component (201) disposed inside the outer needle (101) and a second sealing component (202) disposed on the outer tube (103).

2. The arterial puncture catheter needle with high sealing performance as claimed in claim 1, characterized in that: The outer needle (101) is provided with a through hole (203), the inner needle (102) is snap-fitted into the through hole (203), a retaining ring (204) is provided at the rear end of the outer needle (101), a retaining block (205) is provided at the rear end of the inner needle (102), a matching retaining ring (206) matching with the retaining ring (204) is provided on the retaining block (205), and the second sealing component (202) is provided on the matching retaining ring (206).

3. The highly airtight arterial puncture catheter needle according to claim 2, characterized in that: The outer needle (101) comprises a main needle body (101a) and a catheter placement needle tube (101b) connected to the main needle body (101a); the first sealing component (201) comprises an outer tube (207) disposed inside the main needle body (101a); The outer tube (207) comprises a fixing portion (207a) connected to the inner tube (208) and an expansion portion (207b) connected to the fixing portion (207a), an expansion portion (207b) component is arranged in each expansion portion (207b), and a connecting layer (207d) is arranged between the expansion portions (207b) and the expansion portions (207b).

4. The arterial puncture catheter needle with high sealing performance as claimed in claim 3, characterized in that: The expansion portion (207b) comprises an expansion cavity (301) opened in the expansion portion (207b), a first expansion rod (302) hinged in the expansion cavity (301), and a second expansion rod (303) hinged to the first expansion rod (302).

5. The arterial puncture catheter needle with high sealing performance as claimed in claim 1, characterized in that: The material of the first expansion rod (302) and the second expansion rod (303) is memory alloy. One end of the first expansion rod (302) and the second expansion rod (303) is provided with a first joint (304), and the other end of the first expansion rod (302) and the second expansion rod (303) is provided with a second joint (305). The first joint (304) and the second joint (305) are respectively provided with a first plug hole (306) and a second plug hole (307), and the diameter of the first plug hole (306) is smaller than that of the second plug hole (307).

6. The arterial puncture catheter needle with high sealing performance as claimed in claim 5, characterized in that: The inner needle (102) is provided with a clamping block (308), the clamping block (308) is provided with a clamping edge (309) connected to the second joint (305), an easy-to-break bend mark is provided between the clamping edge (309) and the second joint (305), and the inner wall of the expansion cavity (301) is provided with an auxiliary sealing member (400).

7. The arterial puncture catheter needle with high sealing performance as claimed in claim 6, characterized in that: The auxiliary seal (400) comprises a plurality of connection monomers which are connected to each other end to end, the connection monomers being hinged to each other, the connection monomers comprising a first connection rod (401), a sleeve block (402) connected to the end of the first connection rod (401), two second connection rods (403) hinged to the sleeve block (402), and a middle strip (404) arranged at the end of the second connection rod (403), the middle strip (404) being made of copper alloy.

8. The arterial puncture catheter needle with high sealing performance as claimed in claim 1 or 3, characterized in that: The second sealing component (202) comprises a connecting clamp (202a) connected to the rear end of the auxiliary sealing component (400), a plurality of driving flanges (202b) rotatably connected to the connecting clamp (202a), and a blocking plate (202c) arranged on the driving flange (202b), wherein the plurality of blocking plates (202c) are each provided with an arc-shaped opening (202d), each of the driving flanges (202b) can be rotated independently, the plurality of arc-shaped openings (202d) are spliced ​​into a circular hole, and the driving flange (202b) is provided with a flexible belt (202e).

9. The arterial puncture catheter needle with high sealing performance as claimed in claim 1, characterized in that: The lower end of the flexible belt (202e) is connected to the connecting clamp ring (202a), and each of the flexible belts (202e) is arranged to fit along the surface of the driving rib (202b). A sealing round gasket is arranged at the end of a plurality of the flexible belts (202e), and the sealing round gasket is clamped in the round hole.

10. The arterial puncture catheter needle with high sealing performance as claimed in claim 1, characterized in that: The end of the first connecting rod (401) is connected to the driving rib (202b).

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