Puncture system

Abstract

The invention belongs to the technical field of medical instruments, and discloses a puncture system which comprises an arterial duct, a puncture needle, a venous duct, a first guide wire and a second guide wire. The arterial duct penetrates through the artery; the puncture needle penetrates through the arterial duct, and the far end of the puncture needle extends in a bent mode and punctures into the vein from the artery. The venous catheter penetrates through veins; the first guide wire penetrates through the puncture needle and is introduced into the vein; the second guide wire penetrates through the venous catheter; an adsorption part is arranged at the far end of one of the first guide wire and the second guide wire, and the adsorption part is used for being fixed to the far end of the other guide wire in an adsorption mode. Therefore, the first guide wire can be guided to a specified position only by penetrating a puncture needle into a specified position, and after the second guide wire enters the specified position, the far end of the first guide wire and the far end of the second guide wire can be automatically fixed together by utilizing the adsorption force of the adsorption part, so that the connection of the first guide wire and the second guide wire is quickly completed, and the labor intensity of workers is reduced. The difficulty of capturing the guide wire is effectively reduced, and smooth completion of an operation is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a puncture system. Background Art

[0002] Chronic limb-threatening ischemia (CLTI) is usually the end stage of peripheral artery disease (PAD). It is an effective treatment method to achieve venous arterialization through interventional therapy. In interventional therapy, the guide wire plays roles such as introduction, support, canalization, and exchange.

[0003] In the prior art, the puncture system includes an arterial puncture unit and a venous assistance unit. The guide wire of the arterial puncture unit penetrates into the artery and then pierces into the vein, and the venous assistance unit penetrates into the vein and is used to capture the guide wire to form a connection.

[0004] In the above process, the guide wire needs to enter the vein through the puncture needle. Once the puncture needle does not reach the predetermined position, the venous assistance unit may not be able to smoothly capture the guide wire, or the puncture needle may directly pierce the venous assistance unit, affecting the smooth progress of the operation. Summary of the Invention

[0005] The purpose of the present invention is to provide a puncture system to solve the problem that it is difficult to capture the guide wire in the vein during the puncture operation in the prior art, which easily affects the smooth progress of the operation.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The present invention provides a puncture system, which includes:

[0008] An arterial catheter, penetrating through the artery;

[0009] A puncture needle, penetrating through the arterial catheter and the distal end of the puncture needle bending and extending and piercing from the artery into the vein;

[0010] A venous catheter, penetrating through the vein;

[0011] A first guide wire, penetrating through the puncture needle and being introduced into the vein;

[0012] A second guide wire, penetrating through the venous catheter;

[0013] Wherein, among the first guide wire and the second guide wire, an adsorbent is arranged at the distal end of one of them, and the adsorbent is used for adsorbing and fixing the distal end of the other one.

[0014] Optionally, among the first guide wire and the second guide wire, a magnetic attraction member is provided at the distal end of the other one, and the magnetic attraction member is used for adsorbing and fixing with the adsorption member.

[0015] Optionally, the adsorption member and the magnetic attraction member have opposite magnetic polarities.

[0016] Optionally, in the adsorption member or the magnetic attraction member, one of them is provided with a notch for the other one to be inserted into.

[0017] Optionally, the depth of the notch is greater than the height of the adsorption member or the magnetic attraction member.

[0018] Optionally, the arterial catheter has a first positioning portion.

[0019] Optionally, the first positioning portion has a tip.

[0020] Optionally, the venous catheter has a second positioning portion.

[0021] Optionally, a puncture port is provided on the side wall of the arterial catheter, and the puncture end of the puncture needle passes out from the puncture port.

[0022] Optionally, the puncture port is located on the side of the arterial catheter close to its distal end.

[0023] Advantages of the present invention:

[0024] When the puncture system is applied, the first guide wire is introduced from the artery into the vein by the puncture needle, and the second guide wire is introduced into the vein by the venous catheter. The two can be adsorbed and fixed at the distal end through adsorption, so that the capture of the guide wire can be quickly completed. Therefore, it is only necessary to insert the puncture needle into the specified position to guide the first guide wire to the specified position. When the second guide wire enters the specified position, the adsorption force of the adsorption member can be used to automatically fix the distal end of the first guide wire and the distal end of the second guide wire together, so as to quickly complete the connection of the first guide wire and the second guide wire, effectively reducing the difficulty of capturing the guide wire and ensuring the smooth completion of the operation. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the arterial catheter, the puncture needle and the first guide wire of the puncture system in an embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of the venous catheter and the second guide wire of the puncture system in an embodiment of the present invention;

[0027] Figure 3 is a schematic structural diagram of the arterial catheter and the venous catheter of the puncture system respectively penetrating into the artery and the vein in an embodiment of the present invention;

[0028] Figure 4It is a schematic structural diagram of the puncture needle of the puncture system in the embodiment of the present invention piercing into a vein;

[0029] Figure 5 It is a schematic structural diagram of the first guide wire and the second guide wire of the puncture system in the embodiment of the present invention respectively penetrating;

[0030] Figure 6 It is a schematic structural diagram of the adsorption and fixation structure of the adsorbent and the magnetic part of the puncture system in the embodiment of the present invention.

[0031] In the figure:

[0032] 1. Arterial catheter; 11. First positioning part; 2. Puncture needle; 3. Venous catheter; 31. Second positioning part; 4. First guide wire; 5. Second guide wire; 6. Adsorbent; 7. Magnetic part; 71. Notch; 8. Artery; 9. Vein. Detailed implementation manners

[0033] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that only the parts related to the present invention rather than all the structures are shown in the drawings for the convenience of description.

[0034] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0036] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] An embodiment of the present invention discloses a puncture system.

[0038] Referring to Figure 1 and Figure 2 and

[0039] , the puncture system includes an arterial catheter 1, a puncture needle 2, a venous catheter 3, a first guide wire 4, and a second guide wire 5. The arterial catheter 1 is inserted through an artery 8; the puncture needle 2 is inserted through the arterial catheter 1 and the distal end of the puncture needle 2 is bent and extended to penetrate into the vein 9 from the artery 8; the venous catheter 3 is inserted through the vein 9; the first guide wire 4 is inserted through the puncture needle 2 and introduced into the vein 9; the second guide wire 5 is inserted through the venous catheter 3; wherein, among the first guide wire 4 and the second guide wire 5, an adsorbing member 6 is provided at the distal end of one of them, and the adsorbing member 6 is used for adsorbing and fixing the distal end of the other.

[0040] When the puncture system is applied, the first guide wire 4 is introduced into the vein 9 from the artery 8 by the puncture needle 2, and the second guide wire 5 is introduced into the vein 9 by the venous catheter 3. The two can form an adsorption fixation at the distal end through adsorption, so that the capture of the guide wire can be quickly completed. Therefore, only by inserting the puncture needle 2 into the specified position, the first guide wire 4 can be guided to the specified position. When the second guide wire 5 enters the specified position, the adsorption force of the adsorbing member 6 can be used to automatically fix the distal end of the first guide wire 4 and the distal end of the second guide wire 5 together, so as to quickly complete the connection of the first guide wire 4 and the second guide wire 5, effectively reducing the difficulty of capturing the guide wire and ensuring the smooth completion of the operation.

[0041] Optionally, among the first guide wire 4 and the second guide wire 5, a magnetic member 7 is provided at the distal end of the other one, and the magnetic member 7 is used for adsorption fixation with the adsorbing member 6.

[0042] Specifically, taking the adsorbing member 6 provided at the distal end of the first guide wire 4 as an example, a magnetic member 7 is provided at the distal end of the second guide wire 5. The magnetic member 7 has magnetism, and the adsorbing member 6 can be made of a material that can be magnetized, so that the magnetic member 7 and the adsorbing member 6 can form an adsorption fixation.

[0043] Optionally, the magnetism of the adsorbing member 6 is opposite to that of the magnetic member 7.

[0044] The adsorbing member 6 is also made of a magnetic material, and its magnetism is opposite to that of the magnetic member 7, so that when the magnetic member 7 and the adsorbing member 6 are close to each other, the two can be adsorbed and fixed to each other.

[0045] Optionally, in the adsorbing member 6 or the magnetic member 7, a notch 71 for the other one to be inserted is provided in one of them.

[0046] Both the adsorbing member 6 and the magnetic member 7 are in a block shape. Taking the magnetic member 7 with the notch 71 provided as an example, the notch 71 is provided at the end of the magnetic member 7 far from the second guide wire 5. The notch 71 can be rectangular or other polygons. At least part of the adsorbing member 6 can be inserted into the notch 71, so that the two form an insertion fit and are fixedly connected by magnetism. It should be understood that the notch 71 can also be provided on the adsorbing member 6. At this time, at least part of the magnetic member 7 is inserted into the notch 71. The specific position and shape of the notch 71 can be designed according to the relative sizes of the actual adsorbing member 6 and the magnetic member 7, and the present invention does not make a limitation.

[0047] Optionally, the depth of the notch 71 is greater than or equal to the height of the adsorbing member 6 or the magnetic member 7.

[0048] After the notch 71 is formed on the magnetic member 7, the depth of the notch 71 is greater than or equal to the height of the adsorption member 6, so that the space formed by the notch 71 is relatively large, and the adsorption member 6 can be completely inserted into the notch 71 to further improve the connection strength between the adsorption member 6 and the magnetic member 7. When the notch 71 is formed on the adsorption member 6, the depth of the notch 71 is greater than or equal to the height of the magnetic member 7, so that the magnetic member 7 can be completely inserted into the notch 71.

[0049] In one embodiment, a notch 71 is formed in the middle of the magnetic member 7, so that the magnetic member 7 is in a U shape. The height and width of the adsorption member 6 are equal to the depth and width of the notch 71, so that the adsorption member 6 can just be inserted into the notch 71 and fit with the side wall of the notch 71.

[0050] Optionally, the arterial catheter 1 has a first positioning portion 11.

[0051] The first positioning portion 11 is arranged at the distal end of the arterial catheter 1 and is made of a radiopaque material. The first positioning portion 11 can be annular or polygonal. In this embodiment, the first positioning portion 11 is conical and has a tip at the end away from the arterial catheter 1.

[0052] Optionally, the venous catheter 3 has a second positioning portion 31.

[0053] The second positioning portion 31 is arranged at the distal end of the venous catheter 3 and is also made of a radiopaque material. The second positioning portion 31 is annular, and a ring groove is formed on the outer side wall of the venous catheter 3 to accommodate the second positioning portion 31.

[0054] By providing the first positioning portion 11 and the second positioning portion 31, the relative positions of the arterial catheter 1 and the venous catheter 3 can be conveniently determined. When the first positioning portion 11 corresponds to the second positioning portion 31, it indicates that the arterial catheter 1 and the venous catheter 3 have been moved into place.

[0055] Optionally, a puncture opening is formed in the side wall of the arterial catheter 1, and the puncture end of the puncture needle 2 extends in a curved manner to pass through the puncture opening.

[0056] The puncture opening is formed on one side of the arterial catheter 1 near its distal end. The puncture end of the puncture needle 2 can pass through the puncture opening after being bent at a certain angle and pierce the arterial wall and the venous wall to penetrate into the vein 9. Specifically, the bending amplitude of the puncture end of the puncture needle 2 can be designed according to the actual puncture requirements, and the present invention does not make any limitation.

[0057] Refer to Figures 4 to 6, when the puncture system is in use, the arterial catheter 1 and the venous catheter 3 are respectively inserted into the artery 8 and the vein 9 first, and the first positioning portion 11 is made to correspond to the second positioning portion 31. Then, the puncture needle 2 is inserted into the arterial catheter 1, and the puncture end of the puncture needle 2 is inserted into the vein 9. The first guide wire 4 is introduced from the artery 8 into the vein 9 by the puncture needle 2, and the second guide wire 5 is disposed in the venous catheter 3. The suction accessory 6 and the magnetic member 7 are adsorbed and inserted into each other to form a fixation, and the connection between the first guide wire 4 and the second guide wire 5 is successfully achieved.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A puncture system, characterized in that, Comprising: A patent ductus arteriosus (1), penetrating through an artery (8); A puncture needle (2), penetrating through the patent ductus arteriosus (1) and the distal end of the puncture needle (2) bending and extending and piercing from the artery (8) into a vein (9); A venous catheter (3), penetrating through the vein (9); A first guide wire (4), penetrating through the puncture needle (2) and being introduced into the vein (9); A second guide wire (5), penetrating through the venous catheter (3); Wherein, among the first guide wire (4) and the second guide wire (5), an adsorbing member (6) is arranged at the distal end of one of them, and the adsorbing member (6) is used for adsorbing and fixing with the distal end of the other.

2. The puncture system according to claim 1, wherein Among the first guide wire (4) and the second guide wire (5), a magnetic member (7) is arranged at the distal end of the other, and the magnetic member (7) is used for adsorbing and fixing with the adsorbing member (6).

3. The puncture system according to claim 2, wherein, The adsorbing member (6) and the magnetic member (7) have opposite magnetic polarities.

4. The puncture system according to claim 2, wherein Among the adsorbing member (6) or the magnetic member (7), a notch (71) for inserting the other is formed in one of them.

5. The puncture system according to claim 4, wherein, The depth of the notch (71) is greater than the height of the adsorbing member (6) or the magnetic member (7).

6. The puncture system according to claim 1, characterized in that, The patent ductus arteriosus (1) has a first positioning portion (11).

7. The puncture system according to claim 6, wherein, The first positioning portion (11) has a tip.

8. The puncture system according to claim 1, wherein The venous catheter (3) has a second positioning portion (31).

9. The puncture system according to any one of claims 1 to 8, characterized in that, A puncture opening is formed in the side wall of the patent ductus arteriosus (1), and the puncture end of the puncture needle (2) penetrates out from the puncture opening.

10. The puncture system according to claim 9, wherein The puncture opening is located on one side of the patent ductus arteriosus (1) close to its distal end.

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