Piercing device

Abstract

The present application provides a puncture device. The puncture device includes a handle assembly and a puncture assembly, wherein the puncture assembly is partially accommodated in the handle assembly and fixedly connected to the handle assembly, wherein the puncture assembly includes an outer tube, wherein the handle assembly includes a control member and an anti-mistaken touch member connected to the control member, wherein the control member is connected to the outer tube, wherein the control member controls the outer tube to approach or move away from the proximal end of the handle assembly, and wherein the anti-mistaken touch member is used to prevent the outer tube from moving relative to the handle assembly when the control member is misoperated. The puncture device has an anti-mistaken touch member, which can prevent the puncture needle from being covered in advance due to mis-touch, thereby affecting the puncture of the puncture needle.

Description

Technical Field

[0001] The present invention relates to the field of medical instruments, and in particular to a puncture device. Background Art

[0002] The traditional puncture needle is made of a stainless steel tube. When doctors use traditional puncture devices to perform puncture, they usually hold the connector of the puncture device with their hands and apply thrust to the connector of the puncture device, so that the needle tip of the puncture device extends out of the sheath tube and pierces the atrial septum. However, during the puncture process, the sheath tube is easily touched by mistake, causing the sheath tube to cover the puncture needle in advance, affecting the puncture of the puncture needle. Summary of the invention

[0003] Based on this, it is necessary to provide a puncture device having an anti-accidental touch member, which can prevent the puncture needle from being covered in advance due to an accidental touch, thereby affecting the puncture of the puncture needle.

[0004] The puncture device includes a handle assembly and a puncture assembly, wherein the puncture assembly is partially accommodated in the handle assembly and fixedly connected to the handle assembly, wherein the puncture assembly includes an outer tube, and the handle assembly includes a control member and an anti-mistaken-touch member connected to the control member, wherein the control member is connected to the outer tube, and the control member controls the outer tube to approach or move away from the proximal end of the handle assembly, and the anti-mistaken-touch member is used to prevent the outer tube from moving relative to the handle assembly when the control member is operated incorrectly.

[0005] When the operating member rotates, the outer tube member can be bent and deformed relative to the handle assembly.

[0006] The handle assembly includes a handle body, the operating member is sleeved on the handle body, the proximal end of the outer tube is accommodated in the handle body and connected to the operating member, and when the operating member moves relative to the handle body, the outer tube is driven to move relative to the handle body.

[0007] The anti-accidental-touch component is detachably connected to the handle body. When the anti-accidental-touch component is sleeved on the handle body, the proximal end side of the anti-accidental-touch component abuts against the distal end side of the control component.

[0008] The anti-mistake-touch component is fixedly connected to the operating component.

[0009] The anti-accidental-touch component includes a blocking portion and an elastic portion connected to the blocking portion, the elastic portion is accommodated in the operating member, and the blocking portion is closer to the handle body than the elastic portion. When the blocking portion abuts against the handle body, the anti-accidental-touch component can prevent the outer tube from moving relative to the handle assembly when the operating member is operated incorrectly.

[0010] Some of the operating members are provided with elastic portion receiving holes, and the elastic portion is received in the elastic portion receiving holes.

[0011] The outer surface of the handle body is provided with an annular blocking portion receiving groove surrounding the axial center axis of the handle body, the blocking portion abuts against the groove wall of the blocking portion receiving groove, and the blocking portion cooperates with the blocking portion receiving groove to limit the movement of the operating member.

[0012] The anti-accidental touch component is accommodated in the operating component, and the anti-accidental touch component abuts against the handle body. When the operating component moves relative to the handle body, the friction between the anti-accidental touch component and the handle body hinders the movement of the operating component.

[0013] The puncture assembly further includes a puncture member connected to the outer tube member, and the handle assembly further includes a first control member, which controls the movement of the puncture member.

[0014] The handle assembly also includes an anti-accidental collision component, which is accommodated in the first control component and connected to the handle body. The anti-accidental collision component is used to prevent the puncture component from moving relative to the handle assembly when the first control component is operated incorrectly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the puncture device provided in the first embodiment of the present application.

[0016] Figure 2 This is an exploded view of the puncture device provided in the first embodiment of the present application.

[0017] Figure 3 This is a schematic diagram of the puncture assembly in the first embodiment of the present application in a received state.

[0018] Figure 4a This is a schematic diagram of the top view of the handle body in the first embodiment of the present application.

[0019] Figure 4b It is a schematic diagram of a first handle member, a first control member, and a second control member.

[0020] Figure 4c It is a schematic diagram of the second handle member, the first control member, and the second control member.

[0021] Figure 5 This is a schematic diagram of the puncture assembly in the first embodiment of the present application in an extended state.

[0022] Figure 6a It is a connection diagram of the first fixing member, the second fixing member, the outer tube member, and the piercing member.

[0023] Figure 6bIt is a schematic structural diagram of the first fixing member.

[0024] Figure 7 Schematic diagram of the structure of part of the second control component.

[0025] Figure 8a It is a schematic structural diagram of the second fixing member.

[0026] Figure 8b It is a schematic diagram of the top structure of the second fixing member.

[0027] Figure 8c A schematic diagram of the seal structure.

[0028] Fig. 9 This is a schematic diagram of the bending deformation of the puncture assembly in the first embodiment of the present application.

[0029] Fig.10 This is a schematic diagram of the structure of the piercing member in the first embodiment of the present application.

[0030] Fig.11a It is a schematic diagram of the support portion and the main body portion in the second embodiment of the present application.

[0031] Fig.11b This is a schematic diagram of the distal end of the puncture assembly in the second embodiment of the present application.

[0032] Fig.11c for Fig.11b Schematic diagram of the enlarged structure at X in the middle.

[0033] Fig.12 This is a schematic diagram of a bending adjustment member in the second embodiment of the present application.

[0034] Fig.13 This is a schematic diagram of a bending adjustment member in the third embodiment of the present application.

[0035] Fig.14 This is a schematic diagram of the structure of the puncture device provided in the fourth embodiment of the present application.

[0036] Fig.15 for Fig.14 Schematic diagram of the cross-sectional view structure.

[0037] Fig.16 for Fig.15 middle Figure X Schematic diagram of the enlarged structure.

[0038] Fig.17 for Fig.14 A schematic diagram of the cross-sectional view structure from another angle.

[0039] Fig.18 It is a schematic diagram of an explosion in the fourth embodiment of the present application.

[0040] Fig.19 Schematic diagram of the structure of the first control component in the fourth embodiment of the present application.

[0041] Fig. 20 This is a schematic diagram of the structure of the anti-mistouch component in the fourth embodiment of the present application.

[0042] Fig.21 It is a schematic cross-sectional structure diagram of the anti-mistouch component in the fifth embodiment of the present application.

[0043] Fig. 22 for Fig.21 Enlarged schematic diagram of point XX in the middle.

[0044] Fig.23 It is an enlarged schematic diagram of XX in another embodiment. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0047] In the field of interventional medical devices, the “distal end” is defined as the end away from the operator during surgery, and the “proximal end” is defined as the end close to the operator during surgery. “Axial” refers to the direction parallel to the line connecting the distal and proximal centers of the medical device, and “radial” refers to the direction perpendicular to the above axial direction.

[0048] See also Figures 1 to 5 The first embodiment of the present application provides a puncture device 1, which is used for puncturing in the human body. Specifically, it is not limited to puncturing the oval fossa, atrial septal puncture, or puncturing during transjugular intrahepatic portocaval shunt surgery. In this embodiment, the puncture device 1 punctures the oval fossa as an example for explanation.

[0049] See also Figures 1 to 3 The puncture device 1 includes a handle assembly 10 and a puncture assembly 20 received in the handle assembly 10 and fixedly connected to the handle assembly 10 .

[0050] The puncture assembly 20 includes an outer tube 23 and a puncture member 24. The outer tube 23 includes an outer tube 21. The puncture member 24 includes a puncture needle 22. The outer tube 21 is connected to the handle assembly 10. The outer tube 21 is in the shape of a hollow tube. In this embodiment, the puncture needle 22 is plugged into the outer tube 21. At least part of the puncture needle 22 is accommodated in the outer tube 21. In this embodiment, the extension direction of the puncture needle 22 in the outer tube 21 is the same as the extension direction of the outer tube 21. The distal end 22a of the puncture needle 22 is close to the distal end 21a of the outer tube 21. The proximal end 22b of the puncture needle 22 passes through the proximal end 21b of the outer tube 21.

[0051] In this embodiment, at least part of the puncture needle 22 is accommodated in the outer tube 21, and the distal end 22a of the puncture needle 22 is close to the distal end 21a of the outer tube. The puncture needle 22 is moved into the human body together with the outer tube 21. During the puncture operation, the puncture needle 22 does not need to be inserted from the proximal end 21b of the outer tube 21 first, and then slide to the distal end 21a of the outer tube 21, so as to avoid damaging the inner wall of the outer tube 21 and generating debris during the sliding process of the puncture needle 22 in the outer tube 21, thereby reducing the risk of these debris forming thrombi that endanger the patient.

[0052] In this embodiment, the distal end 22a of the puncture needle 22 is close to the distal end 21a of the outer tube 21, which means that the distal end 22a of the puncture needle 22 is close to the end surface of the distal end 21a of the outer tube 21, and the end surface of the distal end 22a of the puncture needle 22 is not flush with the end surface of the distal end 21a of the outer tube 21, that is, the puncture needle 22 is accommodated in the outer tube 21 or a part of the puncture needle 22 is exposed outside the outer tube 21.

[0053] In this embodiment, when the outer tube 21 slides to the designated area of ​​the human body, the distal end 22a of the puncture needle 22 is always contained in the outer tube 21, and does not expose the outer tube 21. For example, when the outer tube 21 slides to the vicinity of the oval fossa of the heart, the outer tube 21 encounters a curved blood vessel channel of the human body and bends and deforms, but the puncture needle 22 does not expose the outer tube 21, thereby preventing the puncture needle 22 from stabbing the human body.

[0054] In this embodiment, the puncture needle 22 passes through the outer tube 21, and the proximal end 22b of the puncture needle 22 is also close to the proximal end 21b of the outer tube 21. Specifically, the proximal end 22b of the puncture needle 22 extends out of the proximal end 21b of the outer tube 21.

[0055] See also Figure 1 and Figure 2In this embodiment, the handle assembly 10 has a receiving piece 113. The receiving piece 113 receives part of the puncture assembly 20. The receiving piece 113 receives the proximal end of the puncture needle 22 and the proximal end of the outer tube 21. Specifically, the handle assembly 10 includes a handle body 11. The handle body 11 includes a first handle piece 111 and a second handle piece 112 connected to the first handle piece 111. In this embodiment, the receiving space enclosed by the first handle piece 111 and the second handle piece 112 is the receiving piece 113.

[0056] See also Figure 4a , Figure 4b and Figure 4c , the first handle member 111 is provided with a snap-fit ​​member 1112. The second handle member 112 is provided with a resisting member 1122. In this embodiment, the snap-fit ​​member 1112 protrudes from the first handle member 111 toward the axial direction close to the handle assembly 10, and the snap-fit ​​member 1112 is hook-shaped as a whole. The snap-fit ​​member 1112 protrudes toward the negative direction of the Y axis. The resisting member 1122 is concave from the second handle member 112 toward the axial direction away from the handle assembly 10, and the resisting member 1122 is groove-shaped as a whole. Figure 4c In the embodiment, the resisting member 1122 is concave inwardly toward the negative direction of the Y axis. The resisting member 1122 cooperates with the buckling member 1112 to close and fix the first handle member 111 and the second handle member 112 together. It can be understood that in other embodiments, the buckling member 1112 can be a groove, and the resisting member 1122 can be a boss.

[0057] In this embodiment, the first handle member 111 is fixedly connected to the second handle member 112. Specifically, glue (not shown) is provided between the first handle member 111 and the second handle member 112, and the glue fixes the first handle member 111 and the second handle member 112. In other embodiments, other methods, such as high-temperature melting, or by providing threads on the outer wall of the first handle member 111 and the outer wall of the second handle member 112, the first handle member 111 and the second handle member 112 cooperate with each other and are threadedly connected with the locking member with internal threads. The specific method is not limited, and it is based on the ability to fix the first handle member 111 and the second handle member 112.

[0058] It is understandable that in other embodiments, the handle assembly 10 may be integrally formed, that is, the first handle member 111 and the second handle member 112 may be integrally formed.

[0059] See also Figure 1 , Figure 3 and Figure 5In this embodiment, the puncture assembly 20 can slide relative to the handle assembly 10 in the axial direction. Specifically, in the axial direction, the puncture needle 22 in the puncture assembly 20 can slide relative to the handle body 11 in the handle assembly 10. The puncture assembly 20 has a receiving state and an extended state. Among them, the receiving state and the extended state can be converted to each other. The extended state means that the distal end 22a of the puncture needle 22 is partially exposed outside the distal end 21a of the outer tube 21. The received state means that the distal end 22a of the puncture needle 22 is received in the distal end 21a of the outer tube 21.

[0060] The handle assembly 10 further includes a first control member 12. The first control member 12 is disposed in at least one of the first handle member 111 and the second handle member 112. Figure 1 and Figure 2 In this embodiment, there are two first control members 12, which are respectively arranged on the first handle member 111 and the second handle member 112. The first control member 12 is connected to the proximal end of the puncture needle 22. The first control member 12 is used to control the puncture needle 22 to slide axially relative to the handle body 11. Figure 5 The first control member (not shown) can control the puncture needle 22 to slide in the axial direction, so that the distal end 22a of the puncture needle 22 extends out of the outer tube 21. Figure 3 , or control the distal end 22a of the puncture needle 22 to extend into the outer tube 21.

[0061] It is understandable that after receiving the external force, the first control member 12 transmits the force to the puncture needle 22, so that the puncture needle 22 slides in the axial direction. In this embodiment, the first control member 12 receives the external force and slides in the axial direction relative to the handle body 11. The first control member 12 is connected to the puncture needle 22, and the first control member 12 slides with the puncture needle 22, so that the puncture needle 22 passes through the outer tube 21 to perform the puncture operation. It is understandable that in this embodiment, the first control member 12 is indirectly connected to the proximal end of the puncture needle 22. In other embodiments, the first control member 12 can be directly connected to the puncture needle 22.

[0062] At least one of the first handle member 111 and the second handle member 112 is provided with a first limiting hole 1111. The first limiting hole 1111 limits the travel of the first control member 12. The first limiting hole 1111 is connected to the receiving member 113. Figure 2 , Figure 4a , Figure 4b and Figure 4cIn this embodiment, the first handle member 111 and the second handle member 112 are both provided with a first limiting hole 1111. The first limiting hole 1111 in the first handle member 111 and the first limiting hole 1111 in the second handle member 112 have the same shape, and the first limiting hole 1111 in the first handle member 111 and the first limiting hole 1111 in the second handle member 112 are directly opposite. In this embodiment, the first limiting hole 1111 is a through hole. It is understandable that in other embodiments, there may be only one first control member 12 and the first limiting hole 1111 used in conjunction with the first control member 12.

[0063] See also Figure 2 In the present embodiment, the puncture member 24 further includes a first fixing member 13. The first fixing member 13 is received in the receiving member 113. The first fixing member 13 is connected to the proximal end of the puncture needle 22 (not shown). Specifically, the first fixing member 13 includes a first fixing member body 131. The proximal end of the puncture needle 22 extends into the first fixing member body 131 and is fixedly connected to the first fixing member body 131. It can be understood that at least part of the first fixing member body 141 is directly opposite to the first limiting hole 1111. That is, the radially inward projection of the first limiting hole 1111 at least partially falls on the first fixing member body 131. In the present embodiment, the first control member 12 receives the action of the outside world and slides axially relative to the handle body 11, and the first control member 12 drives the first fixing member 13 and the puncture needle 22 to slide axially relative to the handle body 11. In other embodiments, external force directly acts on the first fixing member 13 to make the first fixing member 13 slide axially relative to the handle body 11 , and the first fixing member 13 drives the puncture needle 22 to slide axially relative to the handle body 11 .

[0064] See also Figure 2 In the present embodiment, the first fixing member 13 further includes a first fixing portion 132 connected to the first fixing member body 131. The first fixing portion 132 is connected to the outer wall of the first fixing member body 131. In the present embodiment, the first fixing portion 132 is integrally formed with the first fixing member body 131. The first fixing portion 132 passes through the first limiting hole 1111 and is connected to the first control member 12. Specifically, the first fixing portion 132 is disposed on the outer wall of the first fixing member 13 and protrudes radially outward from the outer wall of the first fixing member 13. After a portion of the first fixing portion 132 passes through the first limiting hole 1111, it is connected to the first control member 12. It can be understood that a portion of the first fixing portion 132 is opposite to the first limiting hole 1111. That is, a portion of the first fixing portion 132 is opposite to the hole wall of the first limiting hole 1111.

[0065] In this embodiment, the first fixing portion 132 passes through a portion of the first limiting hole 1111 and is fixedly connected to the first control member 12. Specifically, the first control member 12 is provided with a first clamping portion 121. The first fixing portion 132 extends into the first clamping portion 121 and is fixedly connected to the first clamping portion 121. The first clamping portion 121 is a groove. The first fixing portion 132 is interference fit with the first clamping portion 121. In other embodiments, the first clamping portion 121 and the first fixing portion 132 are also bonded with glue to ensure that the first clamping portion 121 and the first fixing portion 132 are stably connected.

[0066] In this embodiment, the number of the first fixing parts 132, the number of the first limiting holes 1111, and the number of the first control parts 12 are the same. That is, the number of the first fixing parts 132 is two, which pass through the first limiting hole 1111 of the first handle part 111 and the first limiting hole 1111 of the second handle part 112 respectively. The two first fixing parts 132 are symmetrically distributed about the axial direction of the handle assembly 10, so that the first fixing part 13 is uniformly stressed as a whole, and the first fixing part 13 can smoothly slide axially relative to the handle body 11. In other embodiments, the number of the first fixing parts 132 is not limited, and the first control part 12 can control the sliding of the puncture needle 22 through the first fixing part 132. In other embodiments, the first fixing part 132 is a groove, which is plugged into the first clamping part 121 and fixed in the first fixing part 132.

[0067] See also Figure 4a , Figure 4b and Figure 4c In this embodiment, the first limiting hole 1111 includes a first limiting portion 1111a and a second limiting portion 1111b opposite to the first limiting portion 1111a. The first limiting portion 1111a and the second limiting portion 1111b are arranged at intervals in the axial direction. The first limiting portion 1111a and the second limiting portion 1111b are respectively two hole walls opposite to the first limiting hole 1111. The other hole walls of the first limiting hole 1111, together with the first limiting portion 1111a and the second limiting portion 1111b, form the first limiting hole 1111. The first limiting portion 1111a is the distal end of the first limiting hole 1111, and the second limiting portion 1111b is the proximal end of the first limiting hole 1111.

[0068] The first limiting hole 1111 limits the axial travel of the first control member 12. That is, the first limiting portion 1111a and the second limiting portion 1111b limit the axial travel of the first control member 12 to limit the axial travel of the first fixing member 13 and the puncture needle 22. The axial sliding process of the puncture needle 22 is as follows.

[0069] See also Figure 2 , Figure 4b , Figure 4c and Figure 5On the one hand, the first control member 12 slides from the proximal end of the first limiting hole 1111 to the distal end of the first limiting hole 1111, and the first control member 12 drives the first fixing portion 132 and the puncture needle 22 to slide in a direction away from the proximal end 11b of the handle body 11, and the puncture needle 22 gradually extends out of the outer tube 21. The first fixing portion 132, which is partially opposite to the first limiting hole 1111, abuts against the distal end of the first limiting hole 1111 and is restricted by the distal end of the first limiting hole 1111. The first fixing portion 132 cannot continue to slide in a direction away from the proximal end 11b of the handle body 11. The puncture needle 22 and the first control member 12 cannot continue to slide in a direction away from the proximal end 11b of the handle body 11.

[0070] On the other hand, the first control member 12 slides from the distal end of the first limiting hole 1111 to the proximal end of the first limiting hole 1111. The first control member 12 drives the first fixing portion 132 and the puncture needle 22 to slide in the direction close to the proximal end 11b of the handle body 11. The first fixing portion 132, which is partially opposite to the first limiting hole 1111, is restrained by the second limiting portion 1111b after it abuts against the proximal end of the first limiting hole 1111. The first fixing portion 132 cannot slide in the direction close to the proximal end 11b of the handle body 11. The puncture needle 22 and the first control member 12 cannot continue to slide in the direction close to the proximal end of the handle body 11.

[0071] In this embodiment, the cross-sectional area of ​​the first fixing member body 131 is larger than the first limiting hole 1111 , so that the first fixing member body 131 cannot pass through the first limiting hole 1111 , and the first fixing member 13 is not easy to be separated from the handle body 11 .

[0072] The axial distance D1 between the first limiting portion 1111a and the second limiting portion 1111b corresponds to the stroke of the entire puncture needle 22 in one puncture process. The stroke of the first control member 12 sliding in the first limiting hole 1111 in the direction away from the proximal end of the handle body 11 is the same as the sliding stroke of the entire puncture needle 22. Since the puncture needle 22 bends in the human body, the stroke of the distal end of the puncture needle 22 is less than or equal to the stroke of the entire puncture needle 22, and less than or equal to the axial distance between the first limiting portion 1111a and the second limiting portion 1111b.

[0073] During the puncture operation with a traditional puncture device, the doctor usually holds the connector of the puncture device with his hand and applies a thrust to the connector of the puncture device so that the needle tip of the puncture device penetrates the atrial septum. Due to the effect of inertia, after the doctor punctures the atrial septum with the puncture device, the doctor's hand continues to push the connector of the puncture device, causing the needle tip of the puncture device to continue to move forward, resulting in an excessive stroke. This can easily injure the left atrium wall and cause pericardial tamponade. Or, it can easily pierce the aorta and cause serious complications. In addition, the thrust applied by the doctor to the connector of the puncture device is uneven, which affects the sliding of the puncture device in the sheath. After penetrating the atrial septum, the puncture needle 22 in the present application is restricted by the first limit hole 1111 and will not continue to move forward, thereby preventing the puncture needle 22 from continuing to injure the left atrium wall, thereby improving the safety of puncture surgery using the puncture needle 22. Furthermore, the two first control members 12 are respectively arranged on the first handle member 111 and the second handle member 112. The force applied by the doctor is transmitted to the puncture needle 22 by pushing the two first control members 12, so that the force applied to the puncture needle 22 is more uniform, and the puncture needle 22 can slide smoothly in the axial direction, thereby improving the stability of puncture by the puncture needle 22.

[0074] See also Figure 1 , Figure 4b and Figure 4c In this embodiment, the outer wall of the first control member 12 is provided with a plurality of protrusions arranged at intervals, and the protrusions protrude in a direction opposite to the opening direction of the first holding portion 121. These protrusions can increase the friction between the doctor's hand and the first control member 12, making it easier for the doctor to push the first control member 12 to slide.

[0075] Please refer again Figure 2 , Figure 6a and Figure 6b The first fixing member body 131 is provided with a first connecting member channel 1311 , the proximal end (not shown) of the puncture needle 22 is fixed in the first connecting member channel 1311 , and the inner cavity of the puncture needle 22 is communicated with the first connecting member channel 1311 .

[0076] The puncture device 1 also includes a first connector 16. The first connector channel 1311 is connected to the first connector 16 and the interior of the puncture needle 22, so that the first liquid medium can be transported into the body through the first connector 16, the first connector channel 1311 and the puncture needle 22 in sequence. In this embodiment, the puncture needle 22 is connected to the first connector 16 through the first connector channel 1311 in the first fixing member body 131.

[0077] In other embodiments, part of the puncture needle 22 is received and fixed in the first fixing member 131, and part of the puncture needle 22 that passes through the first fixing member body 131 is connected to the first connecting member 16. That is, the proximal end of the puncture needle 22 is directly connected to the first connecting member 16. The first liquid medium can be directly input into the puncture needle 22 through the first connecting member 16, thereby improving the efficiency of inputting the first liquid medium into the puncture needle 22.

[0078] The first connecting member 16 includes a first connecting portion 162 and a first switch portion 161 connected to the first connecting portion 162. The first switch portion 161 is disposed outside the handle assembly 10. The proximal end of the first connecting portion 162 is connected to the first switch portion 161. The distal end of the first connecting portion 162 is connected to the first connecting member channel 1311, and the first connecting portion 162 is communicated with the first connecting member channel 1311.

[0079] Specifically, when the first switch portion 161 is in a normally open state, the first liquid medium or the guide wire can be introduced through the first switch portion 161. The first liquid medium or the guide wire moves into the first connector channel 1311 through the first connecting portion 162. Then it enters the human body through the inner cavity of the puncture needle 22. It can be understood that the first liquid medium is not limited to a contrast agent or saline. When the first switch portion 161 is in a normally closed state, it can prevent blood from passing through. In this embodiment, the first switch portion 161 is a three-way valve, and the first connecting portion 162 is a hollow tubular structure.

[0080] The first fixing member body 131 is also provided with a second channel 1312 spaced apart from the first connecting member channel 1311. That is, the first connecting member channel 1311 is not connected to the second channel 1312. The inner diameter of the second channel 1312 is larger than the inner diameter of the first connecting member channel 1311. The puncture assembly 20 also includes a second connecting member 17. The second connecting member 17 is also provided outside the handle assembly 10. A portion of the second connecting member 17 is connected to the outer tube 21 by being provided in the second channel 1312.

[0081] Please refer again Figure 1 , Figure 3 and Figure 5 In this embodiment, the outer tube 21 can slide relative to the handle assembly 10 in the axial direction. That is, the distal end 21a of the outer tube 21 can slide in the axial direction in a direction away from the handle assembly 10, so that the puncture assembly 20 is converted from the extended state to the retracted state. The distal end 21a of the outer tube 21 can also slide in a direction close to the handle body 11, so that the puncture needle 22 is converted from the retracted state to the extended state.

[0082] Specifically, see Figure 2The outer tube member 23 also includes a second fixing member 15 located at the distal end of the first fixing member 13. The second fixing member 15 is used to fix the outer tube 21. The second fixing member 15 is accommodated in the accommodating member 113. The second fixing member 15 is spaced apart from the first fixing member 13. The second fixing member 15 is located at the distal end of the first fixing member 13, that is, in the axial direction, the proximal end of the first fixing member 13 is closer to the proximal end of the puncture device 1 than the second fixing member 15. The first fixing member 13 is fixedly connected to the proximal end 22b of the puncture needle 22, so that the distal end 22a of the puncture needle 22 can be controlled to extend out of the distal end 21a of the outer tube 21 or extend into the distal end 21a of the outer tube 21 through the first fixing member 13.

[0083] See also Figure 1 , Figure 2 and Figure 7 The handle assembly 10 further includes a second control member 14. The second control member 14 is spaced apart from the first control member 12. The second control member 14 is connected to the outer tube 21. The second control member 14 is used to control the outer tube 21 to slide relative to the puncture needle 22 in the axial direction.

[0084] In this embodiment, the outer tube 21 can slide relative to the handle body 11, so as to accurately adjust the position of the outer tube 21 in the human body. The second control member 14 controls the outer tube 21 to slide relative to the handle body 11 in the axial direction, so that it slides in a direction away from the proximal end of the handle body 11 and re-covers the puncture needle 22, and the puncture needle 22 is accommodated in the hollow tube body of the outer tube 21, thereby reducing the risk of the puncture needle 22 piercing the inner wall of the human body and improving the safety of the operation.

[0085] In this embodiment, the first control member 12 is closer to the proximal end of the puncture device 1 than the second control member 14. After the first control member 12 controls the puncture needle 22 to transform from the contained state to the extended state and pierce the atrial septum, it is necessary to control the second control member 14 to slide in a direction away from the proximal end of the puncture device 1 to control the outer tube 21 to cover the puncture needle 22 again. Since the first control member 12 is closer to the proximal end of the puncture device 1 than the second control member 14, that is, the second control member 14 is farther away from the proximal end of the puncture device 1 than the first control member 12, when the second control member 14 is controlled to slide in the direction away from the proximal end of the puncture device 1, the second control member 14 will not gradually approach the first control member 12, but will gradually move away from the first control member 12. In the process of controlling the second control member 14, it is not easy to accidentally touch the first control member 12, so as to avoid accidentally touching the first control member 12 and changing the position of the puncture needle 22 in the human body, and to avoid touching the first control member 12 and changing the position of the puncture needle 22. If the first control member 12 is passively touched and then withdrawn, the puncture needle 22 will retract into the outer tube 21, so that the distal end of the puncture assembly 20 rebounds to the right atrium and cannot enter the left atrium.

[0086] Combination Figure 4a , Figure 4b and Figure 4c , the second control member 14 covers part of the first handle member 111 and part of the second handle member 112. The first handle member 111 and the second handle member 112 are both provided with a notch 200. The notch 200 is formed by a part of the outer surface of the first handle member 111 or a part of the outer surface of the second handle member 112 being concave radially inward. The second control member 14 is placed on the notch 200. The two opposite side walls of the notch 200 are used to limit the axial travel of the second control member 14.

[0087] See also Figure 2 and Figure 7 , the second control member 14 includes a second clamping portion 141 and a connecting thread 142 spaced apart from the second clamping portion 141. The second clamping portion 141 is a groove provided on the inner surface of the second control member 14 and recessed toward the outer surface of the second control member 14. The second clamping portion 141 in the second control member 14 is used to cooperate with the second fixing member 15 to control the axial movement of the second fixing member 15. The connecting thread 142 of the second control member 14 is used to adjust the deformation and bending of the outer tube 21. In this embodiment, the second clamping portion 141 and the connecting thread 142 are both provided on the inner surface of the second control member 14, and the connecting thread 142 and the second clamping portion 141 can move axially with the second control member 14 at the same time. In other embodiments, the connecting thread 142 and the second clamping portion 141 can be respectively provided in different sub-components in the second control member 14. As long as the connecting thread 142 and the second clamping portion 141 can move axially synchronously.

[0088] In this embodiment, the second control member 14 is connected to the proximal end of the outer tube 21, and the second control member 14 is indirectly connected to the proximal end of the outer tube 21. In other embodiments, the second control member 14 may also be directly connected to the proximal end of the outer tube 21.

[0089] See also Figure 4a , 4b and Figure 4c In this embodiment, the handle assembly 10 is provided with a second limiting hole 1113. The second limiting hole 1113 is used to limit the axial stroke of the second control member 14. Specifically, the first handle member 111 in the handle assembly 10 is provided with a second limiting hole 1113. The second limiting hole 1113 is spaced apart from the first limiting hole 1111. The second limiting hole 1113 penetrates from the outer wall of the handle body 11 to the receiving member 113 in the handle body 11. Part of the second control member 14 is connected to the proximal end of the outer tube 21 through the first limiting hole 1111. The proximal end of at least part of the outer tube 21 is opposite to the second limiting hole 1113. The second handle member 112 is also provided with a second limiting hole 1113. The second limiting hole 1113 of the second handle member 112 is opposite to the second limiting hole 1113 of the first handle member 111.

[0090] See also Figure 2The second fixing member 15 includes a second fixing member body 151. The proximal end of the outer tube 21 extends into the second fixing member body 151 and is fixedly connected to the second fixing member body 151.

[0091] In this embodiment, the second fixing member 15 further includes a second fixing portion 152 connected to the second fixing member body 151. The second fixing portion 152 is connected to the outer wall of the second fixing member body 151. The second fixing portion 152 passes through the second limiting hole 1113 and is connected to the second control member 14. Figure 4b , Figure 4c and Figure 7 , the second fixing portion 152 protrudes radially from the outer wall of the second fixing body. The second fixing portion 152 passes through the second limiting hole 1113 and is buckled with the second clamping portion 141 in the second control member 14. During the axial movement of the second control member 14, the distal side wall and the proximal side wall of the second clamping portion 141 clamp the distal outer wall and the proximal outer wall of the second fixing portion 152, and drive the second fixing portion 152 and the second fixing member body 151 to move axially. In this embodiment, part of the second fixing portion 152 is directly opposite to the second limiting hole 1113.

[0092] See also Figure 4a , Figure 4b and Figure 4c In this embodiment, the second limiting hole 1113 includes a third limiting portion 1113a and a fourth limiting portion 1113b opposite to the third limiting portion 1113a. The third limiting portion 1113a and the fourth limiting portion 1113b are arranged at intervals in the axial direction. The third limiting portion 1113a and the fourth limiting portion 1113b limit the axial stroke of the second control member 14. The third limiting portion 1113a is the distal end of the second limiting hole 1114, and the fourth limiting portion 1113b is the proximal end of the second limiting hole 1113.

[0093] On the one hand, see Figure 3 and Figure 4b When the second control member 14 slides from the proximal end of the second limiting hole 1113 to the distal end of the second limiting hole 1113, the second control member 14 drives the second fixing portion 152 and the outer tube 21 to slide away from the proximal end 11b of the handle body 11. The outer tube 21 gradually covers the distal end 22a of the puncture needle 22. When the second fixing portion 152 abuts against the distal end of the second limiting hole 1114, the second fixing portion 152 is restricted by the distal end of the second limiting hole 1114, and the second fixing portion 152 and the puncture needle 22 cannot continue to slide in the direction away from the proximal end 11b of the handle body 11. The second fixing portion 152 and the outer tube 21 cannot continue to slide in the direction away from the proximal end 11b of the handle body 11. In this process, the puncture needle 22 is converted from an extended state to a retracted state.

[0094] On the other hand, see Figure 4b and Figure 5 When the second control member 14 slides from the distal end of the second limiting hole 1113 to the proximal end of the second limiting hole 1113, the second control member 14 drives the second fixing portion 152 and the outer tube 21 to slide toward the proximal end 11b of the handle body 11, so that the distal end 22a of the puncture needle 22 gradually appears outside the outer tube 21. When the second fixing portion 152 abuts against the proximal end of the second limiting hole 1113, the second fixing portion 152 is restricted by the proximal end of the second limiting hole 1113, and the second fixing portion 152 and the puncture needle 22 cannot slide in the direction close to the proximal end of the handle assembly 10. In this process, the puncture needle 22 is converted from the accommodated state to the extended state.

[0095] The third limiting portion 1113a and the fourth limiting portion 1113b are respectively two opposite hole walls of the second limiting hole 1113. The other hole walls of the second limiting hole 1113, together with the third limiting portion 1113a and the fourth limiting portion 1113b, form the second limiting hole 1113. The cross-sectional area of ​​the second fixing member body 151 is larger than the second limiting hole 1113, so that the second fixing member 151 cannot pass through the second limiting hole 1113, and the second fixing member 151 is not easy to be separated from the handle body 11.

[0096] In this embodiment, the movable axial stroke of the outer tube 21 is greater than or equal to the movable axial stroke of the puncture needle 22. In this way, after the puncture needle 22 punctures the atrial septum, the outer tube 21 slides away from the proximal end of the handle assembly 10, and can completely cover the puncture needle 22 again, thereby reducing the risk of the puncture needle 22 puncturing the inner wall of the human body and improving the safety of the operation.

[0097] The movable axial stroke of the outer tube 21 is the axial distance D2 between the third limit portion 1113a and the fourth limit portion 1113b. The movable axial stroke of the puncture needle 22 is the axial distance D1 between the first limit portion 1111a and the second limit portion 1111b. Wherein, D2 is greater than or equal to D1, so that the movable axial stroke of the outer tube 21 is greater than the movable axial stroke of the puncture needle 22, so that the outer tube 21 can re-cover the puncture needle 22 after the puncture needle 22 extends out of the outer tube 21. The movable axial stroke of the outer tube 21 is the same as the movable axial stroke of the second control member 14. The movable axial stroke of the puncture needle 22 is the same as the movable axial stroke of the first control member 12.

[0098] In this embodiment, when the outer tube 21 slides in the direction away from the proximal end 11b of the handle body 11, the puncture needle 22 remains stationary relative to the proximal end 11b of the handle body 11 to ensure that the position of the puncture needle 22 in the human body remains unchanged, thereby preventing the puncture needle 22 from moving and easily piercing the left atrium wall.

[0099] See also Figure 2 , Figure 6a , Figure 8a and Figure 8b The second fixing member 15 is provided with a connecting cavity 1512 connected to the inner cavity of the outer tube 21, and a puncture member channel 1511 connected to the connecting cavity 1512. The puncture needle 22 is inserted into the outer tube 21 through the puncture member channel 1511 and the connecting cavity 1512. Specifically, the second fixing member body 151 includes the puncture member channel 1511. The proximal end of the outer tube 21 is inserted into the second fixing member body 151. The puncture member channel 1511 is opposite to the first connecting member channel 1311. The puncture needle 22 passes through the puncture member channel 1511 and is inserted into the outer tube 21.

[0100] In this embodiment, the second fixing member body 151 further includes a connecting cavity 1512 and a second connecting member channel 1513. The second connecting member channel 1513 is spaced apart from the piercing member channel 1511, and the second connecting member channel 1513 is connected to the connecting cavity 1512. The connecting cavity 1512 is connected to the piercing member channel 1511. The second connecting member channel 1513 is connected to the piercing member channel 1511 through the connecting cavity 1512.

[0101] See also Figure 1 , Figure 2 , Figure 6a , the second connecting member 17 can be used to introduce a second liquid medium. The second liquid medium can be transported into the body through the second connecting member 17, the second connecting member channel 1513, the connecting cavity 1512 and the outer tube 21 in sequence. Specifically, the second connecting member 17 includes a second switch portion 171 and a second connecting portion 172 connected to the second switch portion 171. The second switch portion 171 is arranged outside the handle body 11. The proximal end of the second connecting member 17 is connected to the second switch portion 171. Part of the second connecting portion 172 passes through the second channel 1312. The distal end of the second connecting portion 172 is connected to the second connecting member channel 1513 and the connecting cavity 1512. When the second switch portion 171 is in a normally open state, the second liquid medium can be introduced through the second switch portion 171. The second liquid medium moves to the second connecting member channel 1513, the connecting cavity 1512, and the inner cavity of the outer tube 21 through the second connecting portion 172 and enters the human body. It can be understood that the second liquid medium is not limited to physiological saline, etc., and is determined according to actual needs.

[0102] On the one hand, during the exhaust process of the puncture device 1, the first liquid medium flows through the first connector 16, the first connector channel 1311 and the puncture needle 22, and the gas in the first connector 16, the first connector channel 1311 and the puncture needle 22 is discharged outside the puncture device 1. The second liquid medium flows through the second connector 17, the second connector channel 1513, the connecting cavity 1512 and the outer tube 21, and the gas in the second connector 17, the second connector channel 1513, the connecting cavity 1512 and the outer tube 21 is discharged outside the puncture device 1. This embodiment can effectively discharge the gas in the puncture device 1 outside the puncture device 1 to avoid gas embolism during the operation. It can be understood that during the exhaust process, only the first liquid medium flows through the first connector 16, the first connector channel 1311 and the puncture needle 22, or only the second liquid medium flows through the second connector 17, the connecting cavity 1512 and the outer tube 21, and the gas in the puncture device 1 cannot be completely discharged. This is because the exhaust of the first connector 16 , the first connector channel 1311 and the puncture needle 22 is independent of the exhaust of the second connector 17 , the second connector channel 1513 , the connecting cavity 1512 and the outer tube 21 .

[0103] On the other hand, when the first liquid medium is contrast fluid, the first liquid medium flows out from the distal end 22a of the puncture needle 22, and the position of the distal end 22a of the puncture needle 22 can be accurately determined, making it easier for the doctor to control the puncture needle 22 to puncture the atrial septum, thereby improving the accuracy of the puncture operation.

[0104] See also Figure 6a , 8a , 8b and Figure 8c The proximal end of the second fixing member body 151 is provided with a connecting groove 19. The connecting groove 19 is connected to the piercing member channel 1511. The proximal end of the second fixing member body 151 is also provided with a joint 151c. The joint 151c is spaced apart from the piercing member channel 1511. The joint 151c is used to connect with the second connecting portion 172. The second connecting portion 172 is penetrated inside the joint 151c and is connected to the second connecting member channel 1513.

[0105] See also Figure 6a , Figure 8a and Figure 8c The handle assembly 10 further includes a seal 18. The seal 18 is attached to and fixed on the proximal end surface of the second fixing body 151, and seals the opening of the communication groove 19 in the second fixing body 151 to prevent liquid from flowing through the gap between the communication groove 19 and the seal 18. The manner in which the seal 18 is attached to and fixed on the proximal end surface of the second fixing body 151 is not limited to one or a combination of multiple methods such as bonding and plugging.

[0106] In this embodiment, the sealing member 18 is in a cubic shape as a whole, and is provided with an opening 181, which passes through the proximal end surface and the distal end surface of the sealing member 18, and is communicated with the connecting groove 19. The puncture needle 22 passes through the opening 181 and is connected to the puncture member channel 1511. The inner wall of the opening 181 is interference-fitted with the puncture needle 22 to prevent liquid from flowing through the gap between the puncture needle 22 and the opening 181.

[0107] The side wall of a portion of the sealing member 18 is concave inwardly toward the axial direction where the opening 181 is located. This portion fits against the side wall of the joint 151c in the second fixing member body 151, making the sealing member 18 and the second fixing member body 151 more compact.

[0108] See also Fig. 9 , the puncture assembly 20 can be bent and deformed. Specifically, the outer tube 21 in the puncture assembly 20 can be bent and deformed. Figure 2 and Figure 3 The puncture device 1 further includes a bending adjustment component 30. The bending adjustment component 30 is connected to the puncture component 20, and the bending adjustment component 30 is also connected to the handle component 10. The bending adjustment component 30 controls the bending deformation of the puncture component 20. In this embodiment, the outer tube 21 is adjusted in shape by the bending adjustment component 30. In other embodiments, the outer tube 21 may be pre-deformed, that is, it is already in a bent state before being inserted into the human body.

[0109] Specifically, the bending adjustment assembly 30 includes an adjusting member 31, a bending adjustment member 33, and a traction member 32 connected between the adjusting member 31 and the bending adjustment member 33. The adjusting member 31 is accommodated in the accommodating member 113. The adjusting member 31 is spaced apart from the second fixing member 15, and is arranged on the side of the second fixing member 15 away from the first fixing member 13. The adjusting member 31 is sleeved on the outer wall of the outer tube 21, and the adjusting member 31 can slide on the outer wall of the outer tube 21. The bending adjustment member 33 is arranged in the distal end of the outer tube 21 and fixed in the distal end of the outer tube 21. The radially inward projection of the bending adjustment member 33 falls on the distal end of the puncture needle 22. The proximal end of the traction member 32 is connected to the adjusting member 31. The distal end of the traction member 32 is connected to the bending adjustment member 33.

[0110] The adjusting member 31 is connected to the second control member 14. Figure 2 , Figure 4a , 4b 4c, at least one of the first handle member 111 and the second handle member 112 is provided with a third limiting hole 300. The third limiting hole 300 is spaced apart from the second limiting hole 1113. The third limiting hole 300 penetrates from the outer wall of the handle body 11 to the receiving member 113 in the handle body 11. A portion of the adjusting member 31 extends from the third limiting hole 300 and is threadedly connected with the connecting thread 142 in the second control member 14.

[0111] The specific process of the second control member 14 adjusting the position of the adjusting member 31 to bend the outer tube 21 is described as follows. For example, the second control member 14 abuts against the side wall of the notch 200 at the proximal end, and rotates relative to the axis of the handle body 11 with the side wall of the proximal end of the notch 200 as support, and the adjusting member 31 slides on the outer wall of the outer tube 21 relative to the handle body 11 as the second control member 14 rotates. When the second control member 14 drives the adjusting member 31 to slide toward the proximal end of the outer tube 21, the adjusting member 31 pulls the traction member 32 and the bending member 33 toward the proximal end of the outer tube 21, so that the distal end of the outer tube 21 bends in the direction close to the proximal end of the outer tube 21. The bending of the outer tube 21 in the direction close to the proximal end of the outer tube 21 will also cause the puncture needle 22 to bend in the same direction. In this embodiment, the bending member 33 is a hollow annular structure, and the bending member 33 can be used as a developing point.

[0112] In this embodiment, the outer tube 21 can be bent and deformed to facilitate adjustment of the shape of the outer tube 21 on the human body so that the distal end of the outer tube 21 is directed toward a predetermined position, allowing the puncture needle 22 to accurately puncture the predetermined position, thereby improving the accuracy of puncture by the puncture needle 22.

[0113] In this embodiment, the puncture needle 22 is bendable and deformable. Specifically, the distal end 22a of the puncture needle 22 is provided with a bendable structure 211. Fig.10 The bendable structure 211 can bend and deform the distal end 22a of the puncture needle 22, so as to adjust the orientation of the distal end face of the puncture needle 22. The bendable structure 211 is directly opposite to the distal end of the outer tube 21. When the puncture assembly 20 is in the receiving state, the bendable structure 211 is received in the distal end of the outer tube 21. It can be understood that the shape of the bendable structure 211 can be spiral or dovetail. It can be understood that in other embodiments, the shape of the bendable structure 211 is not limited, and the bendable distal end of the puncture needle 22 shall prevail. In this embodiment, the shape of the puncture needle 22 is adjusted by the bending adjustment assembly 30. In other embodiments, the puncture needle 22 can be prefabricated and deformed, that is, it is already in a bent state before being inserted into the human body.

[0114] In this embodiment, the puncture needle 22 is in the shape of a hollow tube. The end surface of the distal end 22a of the puncture needle 22 is concave toward the proximal end of the puncture needle 22 to form an inclined puncture surface, which is provided with a sharp corner to facilitate stress concentration and improve puncture efficiency.

[0115] Second embodiment

[0116] See also Fig.11a , Fig.11b , Fig.11c and Fig.12The puncture device 1a provided in this embodiment is substantially the same as the first embodiment, except that, in this embodiment, the bending adjusting member 33a is elastic. The bending adjusting member 33a is in a hollow tubular shape. The bending adjusting member 33a is disposed in the distal end 210a of the outer tube 210. The traction member 31a is connected between the adjusting member (not shown) and the bending adjusting member 33a.

[0117] The handle assembly includes a bending control member (not shown), which (i.e., the second control member in the first embodiment and the control member in the fifth embodiment) is used to control the bending of the distal end of the outer tube 21. The specific structure of the bending control member can refer to the second control member in the first embodiment. The bending control member is threadedly connected to the adjusting member, and the bending control member rotates relative to the handle assembly (not shown), which can drive the adjusting member and the traction member 31a to slide relative to the handle assembly. Specifically, when the bending control member rotates in a first rotation direction relative to the axial center axis of the handle assembly, the bending control member drives the adjusting member and the traction member 31a to slide toward the proximal end of the handle assembly, and the bending control member 33a bends in the first bending direction toward the proximal end of the handle assembly, so that the distal end of the outer tube 210 and the distal end of the puncture needle 220 bend in the first bending direction toward the proximal end of the handle assembly. When the bending control member rotates in a second rotation direction (opposite to the first rotation direction) relative to the axial center axis of the handle assembly, the bending control member drives the adjusting member and the traction member 31a to slide in a direction away from the proximal end of the handle assembly, and the bending member 33a gradually restores its original shape, so that the distal end of the outer tube 210 and the distal end of the puncture needle 220 are flush or nearly flush with the axial center axis of the handle assembly. It can be understood that the traction member 31a is formed of a metal or non-metal material with elasticity such as nickel titanium wire.

[0118] In this embodiment, the distal end 210a of the outer tube 210 includes a main body 2101 and a support portion 2102 connected to the main body 2101. The support portion 2102 protrudes along the proximal end away from the outer tube 210. The bending adjusting member 33a is sleeved on the outer surface of the support portion 2102. The radially inward projection of the bending adjusting member 33a falls on the radially inward projection of the support portion 2102.

[0119] The outer tube 210 is provided with a first through hole 211. The first through hole 211 penetrates the proximal end of the outer tube 210 and the distal end 210a of the outer tube 210. That is, the first through hole 211 penetrates the main body 2101 and the support part 2102. The first through hole 211 is used to accommodate the puncture needle 220.

[0120] The outer tube 210 is also provided with an outer tube passage 212, and the outer tube passage 212 is spaced apart from the first through hole 211. The outer tube passage 212 runs through the main body 2101. The outer tube passage 212 is provided inside the outer tube 210, and the extension direction of the outer tube passage 212 is the same as the extension direction of the first through hole 211. The distal end of the traction member 31a extends along the outer tube passage 212 through the side wall of the outer tube 210 to the bending member 33a, and is fixedly connected to the bending member 33a. In other embodiments, the bending member 33a can be omitted, and in this case, the traction member 31a is directly fixed to the distal end 210a of the outer tube 210, and the traction member 31a pulls the distal end 210a of the outer tube 210 to bend. In other embodiments, the traction member 31a is directly fixed to the distal end 210a of the outer tube 210, and is not connected to the bending member 33a. The traction member 31a pulls the distal end 210a of the outer tube 210 to bend under the action of external force, and the bending member 33a bends together with the outer tube 210. After the external force is removed, the bending member 33a returns to its original shape, and the elastic force of the bending member 33a also makes the outer tube 210 return to its original shape.

[0121] In this embodiment, the handle assembly further includes an isolating member 19a, which is a hollow tubular structure. The isolating member 19a is disposed on the outer wall of the bending adjusting member 33a. The isolating member 19a is formed of a polymer material. Part of the traction member 31a is accommodated in the isolating member 19a. The distal end of the traction member 31a passes through the inner cavity of the isolating member 19a and is fixedly connected to the support portion 2102.

[0122] In this embodiment, the distal end 210a of the outer tube 210 further includes a covering portion 2103. The covering portion 2103 covers the isolating member 19a, and the covering portion 2103 covers the portion of the supporting portion 2102 that is exposed from the main body 2101. The proximal end of the covering portion 2103 is flush with the distal end of the main body 2101, thereby avoiding a height difference between the covering portion 2103 and the main body 2101 that affects the withdrawal of the outer tube 210 from the human body.

[0123] The covering portion 2103 also covers the outer wall of the bending adjuster 33 a , so that the bending adjuster 33 a is firmly accommodated in the outer tube 210 , thereby preventing the bending adjuster 33 a from falling off from the outer tube 210 .

[0124] In this embodiment, the isolation member 19a separates the traction member 31a and the covering portion 2103, and the portion of the traction member 31a in the inner cavity of the isolation member 19a can move relative to the isolation member 19a, thereby preventing the portion of the traction member 31a covered by the covering portion 2103 from being supported and limited by the covering portion 2103 and unable to slide relative to the isolation member 19a, so that the support portion 2102 cannot bend.

[0125] In this embodiment, the material of the cover 2103 is the same as the material of the main body 2101, both of which are polymer materials. The cover 2103 can be fused with the main body 2101 in a molten state. In other embodiments, the material of the cover 2103 can be different from the material of the main body 2101.

[0126] In this embodiment, the melting point of the covering portion 2103 is lower than the melting point of the isolating member 19a. In the process of the covering portion 2103 being fused with the main body 2102 in a molten state, the isolating member 19a will not be melted, thereby preventing the melted covering portion 2103 from completely fixing the traction wire 31a in the isolating member 19a to the isolating member 19a as a whole. Preferably, in this embodiment, the proximal end of the isolating member 19a is farther away from the distal end of the outer tube 210 than the proximal end of the bending adjusting member 33a, thereby preventing the covering portion 2103 from covering the proximal end face of the isolating member 19a, thereby more effectively preventing the melted covering portion 2103 from completely fixing the traction wire 31a in the isolating member 19a to the isolating member 19a as a whole.

[0127] In this embodiment, the distal end of the traction member 31a passes through the distal end of the isolation member 19a and is covered and fixed by the covering portion 2013. When the traction member 31a is pulled, the traction member 31a can slide in the isolation member 19a toward the proximal end of the handle assembly, and the distal end of the traction member 31a pulls the covering portion 2103, so that the bending member 33a and the support portion 2102 are bent toward the proximal end of the handle assembly. In other embodiments, the distal end of the traction member 31a passes through the isolation member 19a and is fixedly connected to the bending member 33a. When the traction member 31a is pulled, the distal end of the traction member 31a pulls the bending member 33a, so that the bending member 33a and the support portion 2102 are bent toward the proximal end of the handle assembly.

[0128] See also Fig.12 The outer wall of the bending adjusting member 33a has a plurality of elastic parts 330a and a plurality of opening parts 330b. Each opening part 330b is connected between two adjacent elastic parts 330a. The opening part 330b is a groove structure opened on the bending adjusting member 33a. The opening part 330b can reduce the rigidity of the bending adjusting member 33a, making the bending adjusting member 33a easier to bend.

[0129] Furthermore, when the second control member drives the adjusting member 31a to slide toward the proximal end of the outer tube 210, adjacent elastic portions 330a approach each other, and the opening 330b between two adjacent elastic portions 330a gradually shrinks, so that the bending adjusting member 33a is deformed and bent as a whole.

[0130] In this embodiment, the number of openings 330b per unit length gradually increases from the proximal end 331 of the bending member to the distal end 332 of the bending member. The stiffness of the bending member 33a gradually decreases from the proximal end 331 of the bending member to the distal end 332 of the bending member. The bending member 33a is easier to bend from the proximal end 331 of the bending member to the distal end 332 of the bending member. In other embodiments, the number of openings 330b per unit length remains unchanged from the proximal end 331 of the bending member to the distal end 332 of the bending member.

[0131] Third embodiment

[0132] See also Fig.13 The puncture device 1b provided in this embodiment is basically the same as that in the second embodiment, except that a plurality of openings 340b are connected and spirally extend along the outer wall of the bending member 330 to form a whole.

[0133] The pitch of two adjacent openings 340b gradually decreases in the direction from the proximal end 3301 of the bending member to the distal end 3302 of the bending member. The rigidity of the bending member 330 gradually decreases from the proximal end 3301 of the bending member to the distal end 3302 of the bending member, and the bending member 330 is easier to bend in the direction from the proximal end 3301 to the distal end 3302. In other implementations, the pitch of the opening 340b remains unchanged in the direction from the proximal end 3301 to the distal end 3302 of the bending member 330.

[0134] Fourth embodiment

[0135] The puncture device 1c provided in this embodiment is basically the same as the second embodiment, wherein the components of the bending adjustment component, the second control component, the adjustment component, etc. are basically the same as the components of the bending adjustment component, the second control component, the adjustment component, etc. in the second embodiment; the process of adjusting the bending of the distal end of the puncture component is also basically the same as in the second embodiment, and will not be repeated here. In this embodiment, the difference from the second embodiment is that the first control component, the first fixing component, the second fixing component, etc. are described in detail below.

[0136] See also Figures 14 to 19The puncture device 1c includes a handle assembly 10c and a puncture assembly 20c housed in the handle assembly 10c and fixedly connected to the handle assembly 10c. The puncture assembly 20c includes a puncture needle 22c. The handle assembly 10c also includes a first control member 12c for controlling the puncture needle 22c. When the first control member 12c rotates, the first control member 12c controls the puncture needle 22c to approach or move away from the handle assembly 10c. The first control member 12c controls the puncture needle 22c to approach or move away from the handle assembly 10c, which makes it easy for the first control member 12c to control the puncture needle 22c to pass out of the handle assembly 10c or to extend into the handle assembly 10c, which is easy to operate and easy to control the puncture needle 22c to perform a puncture operation. It can prevent the puncture needle 22c from continuing to move after the puncture is successful due to inertia during the traditional puncture operation and stabbing the human body.

[0137] See also Figures 14 to 17 The first control member 12c is connected to the proximal portion 221c of the puncture needle 22c. The proximal portion 221c of the puncture needle 22c is contained in the first control member 12c. When the first control member 12c rotates, the proximal portion 221c contained in the first control member 12c is controlled to approach or move away from the handle assembly 10c, so that the puncture member 12c approaches or moves away from the handle assembly 10c.

[0138] The first control member 12c can be threadedly connected to the handle body 11c. The first control member 12c is sleeved on the handle body 11c. The proximal end portion 221c of the puncture needle 22c is accommodated in the handle body 11c, and the proximal end portion 221c is connected to the first control member 12c. The inner surface of the first control member 12c is formed with a first threaded portion 122c. Fig.19 In the embodiment, the first control member 12c is further provided with a first holding portion 121c on the inner surface. The first threaded portion 122c is arranged at the distal end of the first holding portion 121c. The outer surface of the handle body 11c is provided with a second threaded portion 1114c. The second threaded portion 1114c is arranged at the distal end of the first limiting hole 1111c. In the present embodiment, the handle body 11c includes a first handle member 111c. The second threaded portions 1114c are respectively arranged on the outer surface of the first handle member 111c, and can be threadedly connected with the first threaded portion 122c.

[0139] In this embodiment, the steps of operating the first control member 12c and the puncture needle 22c are as follows. First, the first control member 12c is subjected to a driving force parallel to the axial direction and away from the proximal end of the handle body 11c, so that the first control member 12c drives the first fixing member 13c and the puncture needle 22c connected to the first fixing member 13c to slide away from the proximal end of the handle body 11c, and the puncture needle 22c extends out of the outer tube 21c. After the first threaded portion 122c in the first control member 12c abuts against the second threaded portion 1114c, the driving force parallel to the axial direction and toward the distal end of the handle body 11c cannot cause the first control member 12c to continue to slide. Then, a rotational force is applied to the first control member 12c, so that the first control member 12c rotates circumferentially around the handle body 11c, and the first threaded portion 122c in the first control member 12c cooperates with the second threaded portion 1114c. While the first control member 12c rotates axially around the handle body 11c, the first control member 12c continues to slide toward the distal end of the handle body 11c, and drives the first fixing member 13c and the puncture needle 22c connected to the first fixing member 13c to slide smoothly away from the proximal end of the handle body 11c, and the puncture needle 22c punctures the oval fossa.

[0140] Combination Figures 14 to 17 During the puncture operation, by pushing the first control member 12c, the puncture needle 22c can be quickly extended out of the outer tube 21c. Then, by rotating the first control member 12c, the torque of rotating the first control member 12c is converted into the puncture force of the puncture needle 22c, so that the puncture needle 22c can puncture the oval fossa. The puncture process of the puncture needle 22c is more stable, and it is not easy to shift and deviate from the target position, thereby improving the accuracy of the puncture of the puncture needle 22c; after the puncture is successful, the puncture needle 22c is not easy to continue to puncture forward under the action of inertia, so as to avoid the puncture needle 22c from puncturing the left atrium wall, thereby improving the safety of the puncture operation performed by the puncture needle 22c.

[0141] See also Fig.17 and Fig.18 A first limiting hole 1111c is provided on the handle body 11c. The first limiting hole 1111c is used to limit the axial stroke of the first control member 12c. The axial distance between the first threaded portion 122c and the second threaded portion 1114c is smaller than the axial length of the first limiting hole 1111c, so as to ensure that after the first control member 12c controls and drives the puncture needle 22c to slide axially away from the proximal end of the handle body 11c by a preset distance, the first threaded portion 111c can contact the second threaded portion 1114c, so that the first threaded portion 122c is connected to the second threaded portion 1114c.

[0142] The first handle member 111c in this embodiment is basically the same as that in the second embodiment, and will not be described in detail here. The difference is that in this embodiment, the first handle member 111c is provided with a limit portion 110c. The limit portion 110c protrudes from the surface of the first handle member 111c in a direction away from the axial direction. After the second control member 14c moves a preset distance in the axial direction toward the proximal end of the handle body 11c, the proximal end of the second control member 14c will abut against the limit portion 110c and cannot move further.

[0143] In this embodiment, the first handle member 111c includes two sub-first handle members (not shown), and the two sub-first handle members are connected by bolts to facilitate assembly and disassembly of the first handle member 111c.

[0144] In other embodiments, the first threaded portion 122c may be disposed on the proximal side of the first clamping portion 121c. The first control member 12c rotates circumferentially around the handle body 11c, driving the first fixing member 13c and the puncture needle 22c connected to the first fixing member 13c to move axially. The first control member 12c continues to approach or move away from the handle assembly 10c in the axial direction, driving the puncture needle 22c to approach or move away from the handle assembly 10c.

[0145] In other embodiments, the inner surface of the first control member 12c may only be provided with a first threaded portion 122c, and the first threaded portion 122c is threadedly connected to the outer wall of the handle body 11c. The first control member 12c rotates circumferentially around the handle body 11c, driving the first fixing member 13c and the puncture needle 22c connected to the first fixing member 13c to move axially.

[0146] In other embodiments, the inner surface of the first control member 12c may only be provided with the first clamping portion 121c, and the first clamping portion 121c cooperates with the first fixing member 13c. The first control member 12c approaches or moves away from the handle assembly 10c in the axial direction, driving the first clamping portion 121c, the first fixing member 13c, and the puncture needle 22c connected to the first fixing member 13c to approach or move away from the handle assembly 10c.

[0147] In other embodiments, the puncture needle 22c can be integrally formed with the first fixing member 13c, and the first control member 12c is connected to the puncture needle 22c and the first fixing member 13c. Part of the puncture needle 22c passes through the handle body 11c and is clamped to the first clamping portion 121c. The first control member 12c can drive the puncture needle 22c to move axially.

[0148] In other embodiments, the puncture assembly 20c may only include the puncture needle 22c. The puncture device 1c is delivered to a designated position of the human body through a delivery sheath. The first control member 12c moves the puncture needle 22c relative to the handle assembly 11c, moving out of the delivery sheath or into the delivery sheath of the delivery device.

[0149] Please refer to Fig.15 , Fig.16 and Fig.17 The first fixing member body 131c in the first fixing member 13c is provided with a first passage 100 penetrating therethrough. The first passage 100 penetrates the distal end of the first fixing member body 131c and the proximal end of the first fixing member body 131c in the axial direction.

[0150] The second fixing member body 151c in the second fixing member 15c is provided with a second passage 200. The second passage 200 penetrates the distal end of the second fixing member body 151c and the proximal end of the second fixing member body 151c in the axial direction. In this embodiment, the first passage 100 and the second passage 200 are arranged opposite to each other. The proximal end of the outer tube 21c is fixed to the distal end of the second fixing member body 151c, and the proximal end of the outer tube 21c extends into the second passage 200 and communicates with the second passage 200.

[0151] In this embodiment, the puncture assembly 20c further includes a seal 18c. The seal 18c seals the proximal end of the second fixture body 151c. That is, the seal 18c seals the proximal side of the second channel 200. This prevents gas or liquid from flowing out of the opening at the proximal end of the second fixture body 151c to the outside of the second fixture body 151c.

[0152] The puncture assembly 20c also includes a connector 101c. The connector 101c is a hollow tubular structure. The proximal end of the connector 101c extends into the first channel 100 and is fixed to the distal end of the first fixing body 131c. The proximal end of the connector 101c can be fixed to the distal end of the first fixing body 131c by bonding, and the bonding material fills the gap between the outer wall of the connector 101c and the inner wall of the first channel 100 to prevent gas or liquid from flowing out of the first fixing body 131c from between the outer wall of the connector 101c and the inner wall of the first channel 100.

[0153] The distal end of the connecting member 101c passes through the sealing member 18c and then extends into the second channel 200, and is connected with the second channel 200. The connecting member 101c connects the first channel 100 with the second channel 200. The connecting member 101c is slidably connected in the second channel 200. The distal end of the connecting member 101c can slide along with the sliding of the first fixing member 13c. During the sliding process of the connecting member 101c in the second channel 200, it will not be separated from the second channel 200, ensuring that the first channel 100, the connecting member 101c and the second channel 200 remain connected.

[0154] The puncture needle 22c passes through the first channel 100 and the second channel 200. The proximal end of the puncture needle 22c extends into the first channel 100 and is fixed in the proximal end of the first fixing member body 131c. The puncture needle 22c passes through the inner cavity of the connecting member 101c, extends in the second channel 200 and extends into the inner cavity of the outer tube 21c.

[0155] Please refer to Figures 15 to 17 In this embodiment, the proximal end of the first fixing member body 131c includes a first inlet 1313 and a second inlet 1314 spaced apart from the first inlet 1313. The second inlet 1314 is connected to the inner cavity of the puncture needle 22c. The first inlet 1313 is connected to the first channel 100.

[0156] During the exhaust process of the puncture device 1c, the first liquid medium flows in from the first inlet 1313, flows through the first channel 100, the connecting piece 101c, and the second channel 200, enters the outer tube 21c, and then is discharged from the puncture device 1c from the far end of the outer tube 21c. This part of the first liquid medium exhausts the gas in the outer tube 21c.

[0157] The second liquid medium flows in from the second inlet 1314, flows through the puncture needle 22c, and is discharged to the outside of the puncture device 1c through the distal end of the puncture needle 22c, and the gas in the puncture needle 22c is discharged. This embodiment can effectively discharge the gas in the puncture needle 22c, the gas in the outer tube 21c, the gas in the first fixing member 13c, and the gas in the second fixing member 15c in the puncture device 1c to the outside of the puncture device 1c, thereby avoiding the occurrence of gas embolism during the operation. During the angiography process, the contrast agent flows in from the second inlet 1314 and is discharged to the outside of the puncture device 1c through the distal end of the puncture needle 22. The contrast agent is discharged from the distal end of the puncture needle 22, which makes it easy to obtain the position of the distal end of the puncture needle 22, facilitates the doctor to perform the puncture operation, and improves the accuracy of the operation.

[0158] In other embodiments, the proximal end of the first fixing member body 131c may only include the first inlet 1313. The first inlet 1313 is connected to the inner cavity of the puncture needle 22c, and the first inlet 1313 is connected to the first channel 100. The first liquid medium flows in from the first inlet 1313, and a part of the first liquid medium enters the inner cavity of the puncture needle 22c. This part of the first liquid medium flows through the puncture needle 22c and is discharged to the outside of the puncture device 1c through the distal end of the puncture needle 22c, and the gas in the puncture needle 22c is discharged; another part of the first liquid medium enters the first channel 100, and this part of the first liquid medium flows through the connecting member 101c, the second channel 200 and the outer tube 21c and is discharged to the outside of the puncture device 1c. This part of the first liquid medium discharges the gas in the outer tube 21c. Only by injecting the first liquid medium into the puncture device 1c, the gas in the puncture needle 22c and the gas in the outer tube 21c can be discharged at the same time, thereby improving the exhaust efficiency of the puncture device 1c.

[0159] See also Fig.14 , Fig.17 , Fig.18 and Fig. 20 In the present embodiment, the handle assembly 1c further includes an anti-accidental touch member 40c. The anti-accidental touch member 40c includes an anti-accidental touch body 41c, and a gripping portion 42c connected to the anti-accidental touch body 41c. The anti-accidental touch body 41c includes a sleeve shape having an opening. The anti-accidental touch body 41c and the gripping portion 42c are integrally formed, and the gripping portion 42c extends in a direction away from the opening of the anti-accidental touch body 41c. In other embodiments, the anti-accidental touch body 41c and the gripping portion 42c may be different components, and then fixedly connected together by other elements. In the present embodiment, the anti-accidental touch member 40c is detachably connected to the handle assembly 10c. The anti-accidental touch member 40c is used to prevent the second control member 14c from moving relative to the distal end of the handle body 11c in the event of an erroneous operation. Misoperation refers to touching or operating the second control member 14c when the outer tube 21c does not need to be adjusted by operating the second control member 14c; or touching or manipulating the first control member 12c when the puncture needle 22c does not need to be adjusted by operating the first control member 12c. When the anti-misoperation member 40c is connected to the handle body 11c, when the anti-misoperation body 41c is sleeved on the outer wall of the handle body 11c, the proximal end face of the anti-misoperation body 41c faces the distal end face of the second control member 14c. When the distal end face of the second control member 14c abuts against the proximal end face of the anti-misoperation member 40c, the second control member 14 cannot slide relative to the handle body 11c in the axial direction along the proximal end away from the handle body 11c, thereby avoiding the second control member 14c being accidentally touched during the puncture process of the puncture needle 22c, and allowing the outer tube 21c to cover the puncture needle 22c again in advance. When the anti-accidental-touch component 40c is detached from the handle body 11c, the second control component 14c no longer has the limiting effect of the anti-accidental-touch component 40c in the axial direction, and can slide axially away from the proximal end of the handle body 11c, so that the outer tube 21c also slides away from the proximal end of the handle body 11c, and the outer tube 21c can cover the puncture needle 22c again.

[0160] In other embodiments, the handle assembly 1c may not include the anti-misoperation member 40c. As long as the second control member 14 is supported by other components and is not easy to slide after being accidentally touched, the purpose of preventing misoperation of the present invention can be achieved.

[0161] Fifth embodiment

[0162] See also Figure 21 to Figure 22The puncture device 1d provided in this embodiment is basically the same as the fourth embodiment. The second control member 14d in the puncture device 1d can control the bending deformation of the distal end of the outer tube 21d, and the second control member 14d can also control the axial movement of the outer tube 21d relative to the handle body 11d. In this embodiment, the components of the first control member 12d, the second control member 14d, the outer tube 21d, etc. are basically the same as the components of the first control member 12c, the second control member 14c, the outer tube 21c, etc. in the fourth embodiment, and are not repeated here. In this embodiment, the operating member and the second control member 14d refer to the same component. In this embodiment, the main difference from the fourth embodiment is that the anti-mistaken touch member 40d is different from the anti-mistaken touch member 40c, which is described in detail below.

[0163] The anti-mis-touch member 40d includes a support block 41d, a blocking portion 42d, and an elastic portion 43d connected between the support block 41d and the blocking portion 42d. The second control member 14d is provided with a receiving portion 140. In this embodiment, the receiving portion 140 is an elastic portion receiving hole 140 that penetrates the inner and outer surfaces of the second control member 14d. The support block 41d is fixed to the side wall of the elastic portion receiving hole 140 close to the outer surface of the second control member 14d. The elastic portion 43d is received in the elastic portion receiving hole 140. The blocking portion 42d is at least partially received in the elastic portion receiving hole 140, and the blocking portion 42d is closer to the handle body 11d than the elastic portion 43d. The inner diameter of the portion of the elastic portion receiving hole 140 close to the inner surface is smaller than the outer diameter of the elastic portion 43d, so that the blocking portion 42d can only be partially exposed from the elastic portion receiving hole 140 and will not be separated from the elastic portion receiving hole 140. An annular blocking portion receiving groove 110d is provided on part of the outer surface of the handle body 11d, and the annular blocking portion receiving groove 110d surrounds the axial center axis of the handle body 11f. The blocking portion receiving groove 110d can receive part of the blocking portion 42d. The elastic portion 43d is supported by the support block 41d, and its own elastic force acts on the blocking portion 42d, so that the blocking portion 42d is abutted against the groove wall of the blocking portion receiving groove 110d. The blocking portion receiving groove 110d cooperates with the blocking portion 42d to limit the axial movement of the second control member 14d. When the second control member 14d is misoperated, the force of the misoperation cannot make the blocking portion 42d disengage from the blocking portion receiving groove 110d, and the blocking portion 42d will block the second control member 14d from moving axially relative to the handle body 11d, so that the outer tube 21d cannot move relative to the handle body 11d. When the force of pushing the second control member 14d causes the blocking portion 42d to retract into the elastic portion receiving hole 140, the blocking portion 42d is separated from the blocking portion receiving groove 110d, and the blocking portion 42d and the blocking portion receiving groove 110d cannot cooperate, and the second control member 14d cannot be restricted from moving in the axial direction. In this embodiment, the blocking portion 42d moves in a direction away from the support block 41d under the elastic force of the elastic portion 43d to resist the groove wall of the blocking portion receiving groove 110d. In other embodiments, the elastic portion 43d applies a pulling force to the blocking portion 42d, and the gravity of the blocking portion 42d itself is greater than the pulling force of the elastic portion 43d and resists the groove wall of the blocking portion receiving groove 110d. When the force of pushing the second control member 14d and the pulling force of the elastic portion 43d act together on the blocking portion 42d, causing the blocking portion 42d to separate from the blocking portion receiving groove 110d, the blocking portion 42d cannot prevent the second control member 14d from moving in the axial direction. Under the pulling force of the elastic portion 43d, the force pushing the second control member 14d can be reduced.

[0164] In this embodiment, the cooperation of the anti-mis-touch member 40d and the handle body 11d has the following beneficial effects. On the one hand, in the process of the first control member 12d controlling the puncture needle 22d to move out of the outer tube 21d, it is possible to avoid accidentally touching the second control member 14d and causing the outer tube 21d to cover the puncture needle 22d in advance, thereby affecting the puncture of the puncture needle 22d. On the other hand, in the process of rotating the second control member 14d to adjust the deformation of the distal end of the outer tube 21d, it is possible to avoid accidentally touching the second control member 14d and causing the outer tube 21d to move in a direction away from the proximal end of the handle body 11d, thereby causing the outer tube 21d to move in a direction away from the proximal end of the handle body 11d in advance, increasing the distance between the distal end face of the outer tube 21d and the distal end face of the puncture needle 22d, thereby avoiding the situation in which the first control member 12d controls the puncture needle 22d to be unable to extend out of the outer tube 21d in a direction away from the proximal end of the handle body, or the length of the extended outer tube 21d is too short, thereby affecting the puncture of the puncture needle 22d.

[0165] In this embodiment, the second control member 14d can control the outer tube 21d to move in the axial direction, and can also control the deformation of the distal end of the outer tube 21d. In other embodiments, the second control member 14d can only control the outer tube 21d to move in the axial direction, or can only control the deformation of the distal end of the outer tube 21d.

[0166] In this embodiment, the elastic portion receiving hole 140 of the second control member 14d is disposed at its distal end. In other embodiments, the elastic portion receiving hole 140 may also be disposed at other positions, such as the proximal end, etc., provided that the elastic portion receiving hole 140 can accommodate part of the anti-mistaken touch member 40d.

[0167] In this embodiment, if Fig.21 , the handle assembly 10d also includes an anti-accidental touch member 50d, and the structure of the anti-accidental touch member 50d is basically the same as that of the anti-accidental touch member 40d. The anti-accidental touch member 50d is housed in the first control member 12d. The anti-accidental touch member 50d cooperates with the handle body 11d to block the axial movement of the first control member 12d. The anti-accidental touch member 50d is used to prevent the puncture needle 22d from moving relative to the handle body 11d when the first control member 12 is accidentally touched. Combined with the puncture surgery process, its specific beneficial effects are as follows. In the process of transporting the puncture device 1d to the target position, or in the process of rotating the second control member 14d to bend the distal end of the outer tube 21d and toward the position to be punctured (such as the oval fossa, etc.), the anti-accidental touch member 50d limits the axial movement of the first control member 12 to avoid accidentally touching the first control member 12, so that the puncture needle 22d extends out of the outer tube 21d in advance and injures the patient.

[0168] In other embodiments, the anti-accidental touch member 50d may be omitted, and only the anti-accidental touch member 40d is provided.

[0169] In other embodiments, the blocking effect of the anti-accidental touch member 40d in the second control member 14d is greater than the blocking effect of the anti-accidental touch member 50d in the first control member 12d (for example, the elastic force of the elastic portion 43d in the anti-accidental touch member 40d that causes the blocking portion 42d to abut against the blocking portion receiving groove 110d is greater than the elastic force of the elastic portion in the anti-accidental touch member 50d that causes the blocking portion to abut against the blocking portion receiving groove 110d). This can further reduce the risk of moving the outer tube 21d due to accidentally touching the second control member 14d, and at the same time, on the basis of preventing the first control member 12d from being accidentally touched, reduce the obstruction to the axial movement of the first control member 12d, and facilitate pushing the first control member 12d to control the movement of the puncture needle 22d.

[0170] In other embodiments, a plurality of elastic portion receiving holes 140 are provided on the second control member 14d. The number of the anti-mistaken touch members 40d is the same as the number of the elastic portion receiving holes 140, and each of them is received in each elastic portion receiving hole 140. The plurality of anti-mistaken touch members 40d can increase the anti-mistaken touch effect of the second control member 40d. In other embodiments, among the plurality of anti-mistaken touch members 40d, a pair of relative anti-mistaken touch members 40d are symmetrical about the central axis of the puncture device 1d. Such an arrangement can make the limiting effect of the plurality of anti-mistaken touch members 40d on the second control member 14d symmetrical and uniform.

[0171] In other embodiments, the receiving portion 140 may be a portion of the inner surface of the second control member 14d that is concave outward to form an elastic portion receiving groove 140. The number of the elastic portion receiving grooves 140 is one or more, and is the same as the number of the anti-false touch member 40d. The elastic portion 43d is received in the elastic portion receiving groove 140, and part of the blocking portion 42d is received in the elastic portion receiving groove 140. The elastic portion 43d is connected between the bottom wall of the elastic portion receiving groove 140 and the blocking portion 42d.

[0172] In other embodiments, the storage portion 140 may be a portion of the inner surface of the second control member 14d that is concave outward to form an annular groove 140. The annular groove 140 is formed by concavely forming a portion of the inner surface of the second control member 14d. One or more anti-false touch members 40d are arranged at intervals on the annular groove 140. The support block 41d is fixed to the groove wall of the annular groove 140, the elastic portion 43d is accommodated in the annular groove 140, and a portion of the blocking portion 42d is accommodated in the annular groove 140. The elastic portion 43d is connected between the bottom wall of the annular groove 140 and the blocking portion 42d.

[0173] In other embodiments, the anti-accidental-touch member 40d may only include the elastic portion 43d and the blocking portion 42d, so that the anti-accidental-touch member 40d can achieve the limiting function.

[0174] In other embodiments, the handle body 11d may not include the blocking portion receiving groove 110d. The blocking portion 42d abuts against the outer wall of the handle body under the action of the elastic portion 43d, and the friction between the blocking portion 42d and the handle body restricts the movement of the second control member 14d.

[0175] In other embodiments, Fig.23 , the anti-accidental touch component 40d is in the shape of a hollow tube. The anti-accidental touch component 40d is elastic. The material of the anti-accidental touch component 40d can be silicone. Part of the inner surface of the second control component 14d is concave outward to form an annular accommodating groove 141. The anti-accidental touch component 40d is fixed to the accommodating groove 141. Part of the anti-accidental touch component 40d is exposed outside the accommodating groove 141 and abuts against the outer wall of the handle body 11d. During the axial movement of the second control component 14d, there is friction between the anti-accidental touch component 40d and the handle body 11d, and the friction hinders the movement of the second control component 14d. When the force acting on the second control component 14d by mistake is less than the static friction between the anti-accidental touch component 40d and the handle body 11d, the second control component 14d remains stationary. When the force acting on the second control member 14d causes the second control member 14d to move, the friction between the anti-mistouch member 40d and the handle body 11d acts to buffer the movement of the second control member 14d, thereby preventing the second control member 14d from moving too fast and the outer tube 21d controlled by the second control member 14d from moving too fast.

[0176] In other embodiments, the outer tube 21d can be integrally formed with the second fixing member 15d and the second control member 14d to form an outer tube member (not shown). The anti-mistaken touch member 40d is connected to the second control member 14d. The anti-mistaken touch member 40d limits the movement of the entire outer tube member.

[0177] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0178] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A puncture device, characterized in that: The puncture device comprises a handle assembly and a puncture assembly, wherein the puncture assembly is partially accommodated in the handle assembly and fixedly connected to the handle assembly, wherein the puncture assembly comprises an outer tube, wherein the handle assembly comprises a control member and an anti-mistaken touch member connected to the control member, wherein the control member is connected to the outer tube, wherein the control member controls the outer tube to approach or move away from the proximal end of the handle assembly, and wherein the anti-mistaken touch member is used to prevent the outer tube from moving relative to the handle assembly when the control member is misoperated; The handle assembly includes a handle body, the control member is sleeved on the handle body, the proximal end of the outer tube is accommodated in the handle body and connected to the control member, and when the control member moves relative to the handle body, the outer tube is driven to move relative to the handle body; The anti-mis-touch component is fixedly connected to the control component; The anti-accidental-touch component includes a blocking portion and an elastic portion connected to the blocking portion, the elastic portion is accommodated in the operating member, and the blocking portion is closer to the handle body than the elastic portion. When the blocking portion abuts against the handle body, the anti-accidental-touch component can prevent the outer tube from moving relative to the handle assembly when the operating member is operated incorrectly.

2. The puncture device according to claim 1, characterized in that: When the operating member rotates, the outer tube member can be bent and deformed relative to the handle assembly.

3. The puncture device according to claim 1, characterized in that: Some of the operating members are provided with elastic portion receiving holes, and the elastic portion is received in the elastic portion receiving holes.

4. The puncture device according to claim 3, characterized in that: The outer surface of the handle body is provided with an annular blocking portion receiving groove surrounding the axial center axis of the handle body, the blocking portion abuts against the groove wall of the blocking portion receiving groove, and the blocking portion cooperates with the blocking portion receiving groove to limit the movement of the operating member.

5. The puncture device according to claim 1, characterized in that: The anti-accidental touch component is accommodated in the operating component, and the anti-accidental touch component abuts against the handle body. When the operating component moves relative to the handle body, the friction between the anti-accidental touch component and the handle body hinders the movement of the operating component.

6. The puncture device according to claim 1, characterized in that: The puncture assembly further includes a puncture member connected to the outer tube member, and the handle assembly further includes a first control member, which controls the movement of the puncture member.

7. The puncture device according to claim 6, characterized in that: The handle assembly also includes an anti-accidental collision component, which is accommodated in the first control component and connected to the handle body. The anti-accidental collision component is used to prevent the puncture component from moving relative to the handle assembly when the first control component is operated incorrectly.

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