Medical puncture device with rebound protection function

Abstract

The invention discloses a medical puncture device with a springback protection function, which belongs to the technical field of medical puncture equipment and comprises a metal sleeve, a metal puncture component and a springback component. The metal puncture assembly comprises a puncture part, a connecting rod and a grab handle part, the two ends of the connecting rod are connected with the first end of the puncture part and the first end of the grab handle part respectively, and the rebound assembly is arranged in the metal sleeve and connected with the puncture assembly. When the metal sleeve abuts against the skin or the soft tissue and the grab handle part is pushed towards the puncture direction, the puncture part can protrude out of the metal sleeve to puncture the skin and the soft tissue. After the sleeve penetrates through the skin, the grab handle part is loosened, the puncture part can completely retract into the metal sleeve under the action of the rebound assembly, the sleeve continues to be pulled in the puncture direction, all the puncture devices can be pulled out, and drainage tubes, guide wires or other medical instruments connected with the puncture devices can be brought out. The device can effectively protect operators, assistants, instrument nurses, cleaning personnel and the like from being accidentally injured by a puncture part in the operation and transfer process.

Description

Technical Field

[0001] The present invention relates to the technical field of medical puncture equipment, and more specifically, to a medical puncture device with a rebound protection function. Background Art

[0002] When placing drainage tubes, guide wires, etc. during surgical operations or other medical procedures, it is necessary to puncture the skin and tissues. Some commonly used drainage kits on the market currently have a metal puncture cone connected to one end of the drainage tube. The tip of the cone is sharp and can easily pierce the skin, thereby guiding the connected drainage tube through the skin and soft tissue. They are widely used.

[0003] However, during clinical operations, the tip of the puncture cone is extremely sharp and can easily injure surgical operators while penetrating the skin and soft tissue. When taking and passing the puncture cone, its protective cap often loosens and falls off, injuring assistants, instrument nurses and cleaning staff.

[0004] Therefore, how to provide a medical puncture device with reliable protection function has become a technical problem that needs to be solved urgently in this field. Summary of the invention

[0005] One object of the present invention is to provide a new technical solution for a medical puncture device with a rebound protection function.

[0006] According to a first aspect of the present invention, there is provided a medical puncture device with a rebound protection function, comprising: a metal sleeve, a metal puncture component and a rebound component;

[0007] The metal puncture assembly comprises a puncture part, a connecting rod and a handle part, the two ends of the connecting rod are respectively connected to the puncture part and the first end of the handle part, the diameter of the connecting rod is smaller than the bottom diameter of the puncture part and the diameter of the handle part, at least part of the puncture part and at least part of the handle part are located inside the metal sleeve, and the second end of the handle part is used to connect a drainage tube, a guide wire or other medical devices;

[0008] The rebound component is arranged inside the metal sleeve and connected to the metal puncture component.

[0009] Optionally, the end of the puncture portion is in the shape of a pyramid, a beveled surface, a cone, or other sharp shapes used for puncture.

[0010] Optionally, one-way anti-slip patterns are provided on the outer peripheral wall of the handle.

[0011] Optionally, the rebound assembly includes a first spring and a limiting ring, the limiting ring is arranged on the inner wall of the metal sleeve, the first end of the first spring is connected to the first end of the handle portion, and the second end of the first spring is connected to the limiting ring.

[0012] Optionally, the first spring is a cylindrical spring or a conical spring, and the diameter of the first spring is larger than the inner diameter of the limiting ring.

[0013] Optionally, an external thread is provided on the outer circumferential wall of the handle portion, and an internal thread matching the external thread is provided on the inner circumferential wall of the first end of the metal sleeve. The handle portion is connected to or separated from the metal sleeve by screwing the external thread into or out of the internal thread.

[0014] Optionally, the medical puncture device with rebound protection function further includes a connecting component, a first end of the connecting component is connected to the handle portion, and a second end of the connecting component is used to connect drainage tubes, guide wires or other medical devices of different models.

[0015] Optionally, a mounting groove is provided on the handle portion, and a card interface penetrating the handle portion is provided on two side walls of the mounting groove;

[0016] The connecting assembly includes a fixed block, two connecting plates and two clamping blocks, the two ends of the fixed block are respectively connected to the first ends of the two connecting plates, the two clamping blocks are respectively connected to the second ends of the two connecting plates, the connecting plates are inserted into the mounting grooves, and the clamping blocks are clamped with the card interfaces.

[0017] Optionally, the connecting assembly further comprises a second spring, which is disposed between the two connecting plates, and a first end of the second spring is connected to one of the connecting plates, and a second end of the second spring is connected to the other connecting plate.

[0018] Optionally, the handle portion also includes a third spring, which is arranged in the mounting groove of the handle portion, and the first end of the third spring is connected to the bottom of the mounting groove, and the second end of the third spring is free. When the connecting plate is inserted into the mounting groove, the third spring can be compressed and deformed, thereby generating an elastic thrust on the entire connecting assembly.

[0019] The beneficial effects of the present invention are:

[0020] The present invention connects the first end of the puncture part and the handle part respectively through a connecting rod, the diameter of the connecting rod is smaller than the bottom diameter of the puncture part and the diameter of the handle part, under the action of the first spring and the limit ring, the end of the puncture part and at least part of the handle part will be hidden inside the metal sleeve, and the second end of the handle part is connected to the drainage tube, guide wire or other medical devices through the connecting sleeve and the fixing assembly. In the storage state and when not in use, the metal sleeve and the handle part are connected and fixed by screwing together the internal and external threads to form a thread lock; when the metal sleeve and the handle part are slightly axially screwed, the thread lock can be loosened, and when reversely screwed, the thread lock can be locked, ensuring that the puncture part will not be accidentally exposed outside the sleeve when not in use. When in use, the operator unscrews the thread lock, places the cannula head against the puncture site on the skin or soft tissue, and pushes the handle in the puncture direction to make the puncture part extend out of the metal cannula until the puncture part pierces the skin and soft tissue to complete the puncture process; then, the operator continues to push the handle to make the metal cannula penetrate the skin together with the puncture part; after that, the operator loosens the handle, and the handle returns to the initial position under the action of the rebound component, and drives the puncture part to rebound into the metal cannula, leaving only the metal cannula head exposed outside the skin, thereby facilitating the operator to continue to pull out the metal cannula and the metal puncture component in the puncture direction, thereby bringing out the drainage tube, guide wire or other medical device connected to the handle. After use, the thread lock can be locked again by reversely twisting the cannula and the handle to ensure that the puncture part will not be accidentally exposed outside the cannula when not in use. The present invention is not only convenient to use, but also can effectively protect operators, assistants, instrument nurses, cleaning personnel and the like from being accidentally injured by the puncture part during transportation, delivery and the entire operation process.

[0021] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0023] Figure 1 It is a structural diagram of the medical puncture device with rebound protection function of the present invention;

[0024] Figure 2 It is a cross-sectional view of the medical puncture device with rebound protection function of the present invention;

[0025] Figure 3 is a structural diagram of a connection assembly of the present invention;

[0026] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0027] The markings in the figure are as follows: 1. Metal sleeve; 11. Internal thread; 2. Metal piercing assembly; 21. Piercing part; 22. Connecting rod; 23. Handle; 24. Mounting groove; 25. Card interface; 26. External thread; 3. Rebound assembly; 31. First spring; 32. Limiting ring; 4. Connecting assembly; 41. Fixed block; 42. Connecting plate; 43. Card block. DETAILED DESCRIPTION

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0030] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0031] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0032] like Figures 1 to 4 As shown, an embodiment of the present invention provides a medical puncture device with a rebound protection function, comprising: a metal sleeve 1, a metal puncture component 2 and a rebound component 3.

[0033] The device is mainly used in surgical and medical operations. It punctures the skin and soft tissue to guide the drainage tube, guide wire or other medical device connected to it to penetrate the skin and soft tissue. It belongs to the field of applied medical devices.

[0034] The metal puncture assembly 2 includes a puncture part 21, a connecting rod 22 and a handle part 23. The two ends of the connecting rod 22 are respectively connected to the puncture part 21 and the first end of the handle part 23. The diameter of the connecting rod 22 is smaller than the bottom diameter of the puncture part 21 and the diameter of the handle part 23. At least part of the puncture part 21 and at least part of the handle part 23 are located inside the metal sleeve 1. The second end of the handle part 23 is used to connect a drainage tube, a guide wire or other medical devices.

[0035] Specifically, the sum of the lengths of the puncture portion 21 , the connecting rod 22 and the handle portion 23 is greater than the length of the metal sleeve 1 , so that the operator can act on the handle portion 23 to facilitate the movement of the puncture portion 21 and the connecting rod 22 .

[0036] The resilient component 3 is disposed inside the metal sleeve 1 and connected to the metal puncture component 2. Specifically, at least a portion of the resilient component 3 is sleeved on the connecting rod 22.

[0037] Specifically, when in use, the head end of the metal sleeve 1 is first placed against the part to be punctured on the skin or soft tissue; then, the operator acts on the handle 23 to push the handle 23 toward the puncture part 21. The movement of the handle 23 drives the connecting rod 22 to move, and the movement of the connecting rod 22 drives the puncture part 21 to move, so that the puncture part 21 extends out of the metal sleeve 1 until the puncture part 21 pierces the skin, completing the puncture process. At the same time, during the movement of the handle 23, the handle 23 exerts a force on the rebound component 3, causing the rebound component 3 to be compressed.

[0038] Next, the operator continues to push the handle 23 and drives the metal sleeve 1 to move, so that the metal sleeve 1 penetrates the skin together with the puncture part 21. The operator releases the handle 23, and the rebound component 3 recovers its elastic deformation. Under the action of the rebound component 3, the handle 23 returns to the initial position and drives the puncture part 21 to rebound into the metal sleeve 1, so that only the head of the metal sleeve 1 is exposed outside the skin, and then the operator can easily pull the metal sleeve 1 and the metal puncture component 2 out of the human body in the puncture direction, thereby taking out the drainage tube, guide wire or other medical device connected to the handle 23. The puncture device can be applied to but not limited to the placement of the drainage tube, which can be a cross tube, a side hole hose or other types, so that the pus, blood and liquid accumulated between human tissues or in the body cavity are guided to the outside of the body to prevent postoperative infection and promote wound healing.

[0039] The present invention connects the two ends of the connecting rod 22 to the first ends of the puncture part 21 and the handle part 23 respectively, the diameter of the connecting rod 22 is smaller than the bottom diameter of the puncture part 21 and the diameter of the handle part 23, at least part of the puncture part 21 and at least part of the handle part 23 are located inside the metal sleeve 1, and the second end of the handle part 23 is connected to the drainage tube, guide wire or other medical device; and the rebound component 3 is arranged inside the metal sleeve 1 and connected to the metal puncture component 2. When in use, first place the head end of the metal sleeve 1 against the part to be punctured on the skin or soft tissue; then, the operator acts on the handle portion 23 to push the handle portion 23 to make the puncture portion 21 extend out of the metal sleeve 1 until the puncture portion 21 pierces the skin to complete the puncture process; then, the operator continues to push the handle portion 23 to make the metal sleeve 1 penetrate the skin together with the puncture portion 21, and the operator releases the handle portion 23. Under the action of the rebound component 3, the handle portion 23 returns to the initial position and drives the puncture portion 21 to rebound into the metal sleeve 1, leaving only the head end of the metal sleeve 1 exposed outside the skin, thereby facilitating the operator to pull the metal sleeve 1 and the metal puncture component 2 out of the human body in the puncture direction, thereby bringing out the drainage tube, guide wire or other medical device connected to the handle portion 23, and protecting the operator, assistants, instrument nurses, cleaning personnel, etc. from being accidentally injured by the puncture portion 21 during subsequent operations and transfers.

[0040] In another embodiment of the present invention, the connecting rod 22 includes a first connecting rod (not shown in the figure) and a second connecting rod (not shown in the figure), the first end of the first connecting rod is connected to the puncture part 21, the second end of the first connecting rod is connected to the first end of the second connecting rod, and the second end of the second connecting rod is connected to the handle part 23. The first spring 31 is sleeved on the first connecting rod, and the first end of the first spring 31 is connected to the first end of the second connecting rod. The second connecting rod has a certain curvature, and the curvature of the second connecting rod is between 165 degrees and 180 degrees. The curvature of the second connecting rod does not affect the relative movement of the first connecting rod and the metal sleeve 1. By setting the curvature of the second connecting rod to 165 degrees to 180 degrees, it is more convenient for the operator to puncture.

[0041] In one embodiment of the invented medical puncture device with rebound protection function, in order to facilitate the puncture portion 21 to penetrate the human skin, the end of the puncture portion 21 is set to a pyramid shape, a bevel shape, a cone shape or other sharp shape that can be used for puncture.

[0042] In one embodiment of the invented medical puncture device with rebound protection function, in order to facilitate the use of the handle portion 23, a one-way anti-slip pattern (similar to a barb, but not sharp, and will not hurt the operator, not shown in the figure) is provided on the outer peripheral wall of the handle portion 23. The one-way anti-slip pattern only increases the friction coefficient between the handle portion 23 and the fingers of the operator when the operator holds the handle portion 23, so that the operator is more stable when holding the handle portion 23, and does not increase the friction coefficient between the handle portion 23 and the puncture hole of the patient's skin when the metal sleeve 1 and the metal puncture assembly 2 are pulled in the puncture direction.

[0043] In one embodiment of the invented medical puncture device with rebound protection function, Figure 1 to Figure 2 As shown, the rebound assembly 3 includes a first spring 31 and a limiting ring 32 . The limiting ring 32 is arranged on the inner wall of the metal sleeve 1 . The first end of the first spring 31 is connected to the first end of the handle 23 , and the second end of the first spring 31 is connected to the limiting ring 32 .

[0044] Specifically, the inner diameter of the limiting ring 32 is smaller than the bottom diameter of the puncture part 21, so that the puncture part 21 can be restricted by the limiting ring 32; the inner diameter of the limiting ring 32 is larger than the diameter of the connecting rod 22, and the inner diameter of the limiting ring 32 is smaller than the diameter of the first spring 31, so that the first spring 31 is restricted by the limiting ring 32; and the inner diameter of the limiting ring 32 is smaller than the diameter of the handle part 23, so that the handle part 23 can be restricted by the limiting ring 32.

[0045] The second end of the first spring 31 and the limiting ring 32 may be in abutment or in a fixed connection. In the present embodiment, the second end of the first spring 31 and the limiting ring 32 are in abutment. The first end of the first spring 31 and the first end of the handle portion 23 may be in abutment or in a fixed connection. In the present embodiment, the first end of the first spring 31 and the first end of the handle portion 23 are in abutment.

[0046] The present invention arranges a limiting ring 32 on the inner wall of the metal sleeve 1, connects the first end of the first spring 31 to the first end of the handle 23, and connects the second end of the first spring 31 to the limiting ring 32. The elastic action of the first spring 31 enables the puncture part 21 to automatically retract into the interior of the metal sleeve 1, thereby avoiding the problem of accidental injury to medical staff by the puncture part 21. The present invention is not only practical but also convenient.

[0047] In one embodiment of the invented medical puncture device with rebound protection function, Figure 2 As shown, the first spring 31 is a conical spring, the diameter of the first end of the first spring 31 is smaller than the diameter of the second end of the first spring 31 , and the diameter of the second end of the first spring 31 is larger than the inner diameter of the limiting ring 32 .

[0048] It should be noted that the first spring 31 of the present invention may also be a cylindrical spring with the same diameter.

[0049] The present invention makes the diameter of the first end of the first spring 31 smaller than the diameter of the second end of the first spring 31, and the diameter of the second end of the first spring 31 is larger than the inner diameter of the limiting ring 32, so that the limiting effect of the limiting ring 32 on the first spring 31 can be achieved, and the puncture part 21, the connecting rod 22 and the handle part 23 can be easily taken out of the metal sleeve 1 for subsequent cleaning and replacement.

[0050] In one embodiment of the invented medical puncture device with rebound protection function, Figure 4 As shown, an external thread 26 is provided on the outer circumferential wall of the handle portion 23 , an internal thread 11 matching the external thread 26 is provided on the inner circumferential wall of the first end of the metal sleeve 1 , and the handle portion 23 is connected to the internal thread 11 via the external thread 26 .

[0051] Specifically, when the device is in storage and not in use, the handle portion 23 engages with the internal thread 11 on the inner wall of the metal sleeve 1 through the external thread 26 to ensure a stable connection between the handle portion 23 and the metal sleeve 1, thereby preventing the handle portion 23 from being suddenly subjected to external force during non-use, causing the puncture portion 21 to extend from the metal sleeve 1 and causing harm to the patient or medical staff.

[0052] When puncture is required, the operator twists the handle portion 23 to rotate axially, thereby releasing the threaded connection between the handle portion 23 and the metal sleeve 1. At this time, if the head end of the metal sleeve 1 is placed against the puncture site on the skin and the handle portion 23 is pushed toward the skin, the puncture portion 21 can protrude from the metal sleeve 1, thereby puncturing the skin and completing the puncture process.

[0053] The present invention provides an external thread 26 on the outer circumferential wall of the handle portion 23, and provides an internal thread 11 matching the external thread 26 on the inner circumferential wall of the first end of the metal sleeve 1, so that the handle portion 23 is connected to the internal thread 11 through the external thread 26, thereby improving the stability of the handle portion 23 locked inside the metal sleeve 1, ensuring that before the thread is loosened, even if an external force pushes the handle portion 23, the puncture portion 21 will not protrude from the metal sleeve 1, thereby protecting medical staff.

[0054] The internal thread 11 on the inner wall of the metal sleeve 1 and the external thread 26 on the outer wall of the handle 23 can engage with each other to form a buckle. When the metal sleeve 1 and the handle 23 are slightly axially screwed, the external thread 26 and the internal thread 11 rotate to loosen the buckle. When the external thread 26 and the internal thread 11 are screwed in the opposite direction, the buckle can be locked.

[0055] In one embodiment of the invented medical puncture device with rebound protection function, Figures 1 to 3As shown, the medical puncture device with rebound protection function also includes a connecting component 4, a first end of the connecting component 4 is connected to the handle portion 23, and a second end of the connecting component 4 is used to connect different types of drainage tubes, guide wires or other medical devices.

[0056] It should be noted that, since different drainage tubes, guide wires or other medical devices have different diameters or structures, when the medical puncture device with a rebound protection function of the present invention needs to connect drainage tubes, guide wires or other medical devices of different diameters or structures, the first end of the connecting component 4 is connected to the handle portion 23, and the drainage tube, guide wire or other medical device is connected to the second end of the connecting component 4, thereby achieving connection between drainage tubes, guide wires or other medical devices of different diameters or structures.

[0057] The second end (tail end) of the connecting component 4 can be of different diameters and shapes, including but not limited to threaded, slotted, serrated, single-piece, open-hole, etc., for connecting drainage tubes, guidewires or other medical devices of different diameters or structures.

[0058] In one embodiment of the invented medical puncture device with rebound protection function, Figures 2 to 3 As shown, a mounting groove 24 is provided on the handle portion 23 , and a card interface 25 penetrating the handle portion 23 is provided on both side walls of the mounting groove 24 .

[0059] The connecting assembly 4 includes a fixed block 41, two connecting plates 42 and two clamping blocks 43. The two ends of the fixed block 41 are respectively connected to the first ends of the two connecting plates 42, and the two clamping blocks 43 are respectively connected to the second ends of the two connecting plates 42. The connecting plates 42 are inserted into the installation grooves 24, and the clamping blocks 43 are clamped with the card interfaces 25.

[0060] Specifically, there are two card interfaces 25. When the connection assembly 4 needs to be installed on the handle portion 23, the operator holds the fixing block 41, inserts the two connecting plates 42 and the two card blocks 43 into the installation slot 24, and when the two card blocks 43 move to the card interfaces 25, the card blocks 43 are engaged with the card interfaces 25, so that the connection assembly 4 is fixed on the handle portion 23.

[0061] When the connecting assembly 4 needs to be removed from the handle portion 23, the operator acts on the clamping block 43 in the card interface 25 to move the two clamping blocks 43 toward the inside of the card interface 25. When the clamping blocks 43 are detached from the card interface 25, the operator acts on the fixing block 41 to pull the fixing block 41 toward the outside of the mounting slot 24 to remove the entire connecting assembly 4.

[0062] In one embodiment of the invented medical puncture device with rebound protection function, the connecting assembly 4 also includes a second spring (not shown in the figure), which is arranged between the two connecting plates 42, and the first end of the second spring is connected to one of the connecting plates 42, and the second end of the second spring is connected to the other connecting plate 42.

[0063] The cross section of the clamping block 43 is a triangular structure, and the second spring is always in a compressed state when the clamping block 43 is inserted into the card interface 25 .

[0064] In one embodiment of the invented medical puncture device with rebound protection function, the handle portion 23 also includes a third spring (not shown in the figure), and the third spring is arranged inside the mounting groove 24. The first end of the third spring is connected to the bottom of the mounting groove 24, and the second end of the third spring is free. When the connecting plate 42 is inserted into the mounting groove 24, the third spring can be compressed and deformed, thereby generating an elastic thrust on the connecting plate 42.

[0065] In this embodiment, when the connecting assembly 4 needs to be removed from the handle portion 23, the operator acts on the clamping block 43 in the clamping interface 25 to move the two clamping blocks 43 toward the inside of the clamping interface 25. When the clamping blocks 43 are detached from the clamping interface 25, the third spring restores its elastic deformation to apply a thrust toward the outside of the mounting slot 24 to the connecting plate 42, thereby popping the entire connecting assembly 4 out of the mounting slot 24.

[0066] The present invention arranges the second spring between the two connecting plates 42 and the third spring inside the mounting groove 24, thereby facilitating the assembly and disassembly of the connecting component 4 and the handle portion 23, further improving the practicality and convenience of the medical puncture device with rebound protection function of the present invention.

[0067] The operation process of the medical puncture device with rebound protection function of the present invention is as follows: when stored and not in use, the puncture part 21 is completely hidden in the metal sleeve 1 under the action of the first spring 31. When in use, first insert the connection component 4 of a specific model into the installation groove 24 to connect the drainage tube, guide wire or other medical devices with the handle part 23. Then fix the handle part 23 and slightly axially twist the metal sleeve 1 to loosen the internal thread 11 of the inner circumferential wall of the metal sleeve 1 and the external thread 26 of the outer circumferential wall of the handle part 23, and open the thread lock. Then, the head end of the metal sleeve 1 is pressed against the part to be punctured on the skin or soft tissue, and the handle part 23 is pushed in the puncture direction at the same time, so that the puncture part 21 can protrude from the metal sleeve 1 and form a complete puncture cone with the metal sleeve 1, and then puncture the skin and soft tissue. After the head of the metal sleeve 1 has also passed through the skin, the grip part 23 is released. At this time, the puncture part 21 can be completely retracted into the metal sleeve 1 under the action of the first spring 31. The metal sleeve 1 is continuously pulled in the puncture direction to pull out the entire puncture device, and the drainage tube, guide wire or other medical device connected thereto can be brought out through the connecting assembly 4. After the device is used, the internal thread 11 of the inner circumferential wall of the metal sleeve 1 and the external thread 26 of the outer circumferential wall of the grip part 23 can be engaged with each other by fixing the grip part 23 and twisting the metal sleeve 1 in the reverse direction, so that the metal sleeve 1 and the grip part 23 are locked again, ensuring that the puncture part 21 will not be accidentally exposed outside the metal sleeve 1 when not in use. Therefore, the medical puncture device of the present invention can protect the operator, assistant, instrument nurse, cleaning personnel, etc. from being accidentally injured by the puncture part 21 during transportation, delivery and the entire puncture operation.

[0068] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A medical puncture device with a rebound protection function, characterized in that: include: Metal sleeves, metal piercing assemblies, and rebound assemblies; The metal puncture assembly comprises a puncture part, a connecting rod and a handle part, the two ends of the connecting rod are respectively connected to the puncture part and the first end of the handle part, the diameter of the connecting rod is smaller than the bottom diameter of the puncture part and the diameter of the handle part, at least part of the puncture part and at least part of the handle part are located inside the metal sleeve, and the second end of the handle part is used to connect a drainage tube, a guide wire or other medical devices; The rebound component is arranged inside the metal sleeve and connected to the metal puncture component.

2. The medical puncture device with rebound protection function according to claim 1, characterized in that: The end of the puncture portion is in the shape of a pyramid, a beveled surface, a cone, or other sharp shapes used for puncture.

3. The medical puncture device with rebound protection function according to claim 1, characterized in that: One-way anti-slip patterns are arranged on the outer peripheral wall of the handle.

4. The medical puncture device with rebound protection function according to claim 1, characterized in that: The rebound assembly includes a first spring and a limiting ring, wherein the limiting ring is arranged on the inner wall of the metal sleeve, the first end of the first spring is connected to the first end of the handle, and the second end of the first spring is connected to the limiting ring.

5. The medical puncture device with rebound protection function according to claim 4, characterized in that: The first spring is a cylindrical spring or a conical spring, and the diameter of the first spring is greater than the inner diameter of the limiting ring.

6. The medical puncture device with rebound protection function according to claim 1, characterized in that: The outer circumferential wall of the handle portion is provided with an external thread, and the inner circumferential wall of the first end of the metal sleeve is provided with an internal thread matching the external thread. The handle portion is connected to or separated from the metal sleeve by screwing the external thread with or unscrewing the internal thread.

7. The medical puncture device with rebound protection function according to claim 1, characterized in that: The medical puncture device with rebound protection function also includes a connecting component, a first end of which is connected to the handle, and a second end of which is used to connect drainage tubes, guide wires or other medical devices of different models.

8. The medical puncture device with rebound protection function according to claim 7, characterized in that: The handle portion is provided with a mounting groove, and both side walls of the mounting groove are provided with a card interface penetrating the handle portion; The connecting assembly includes a fixed block, two connecting plates and two clamping blocks, the two ends of the fixed block are respectively connected to the first ends of the two connecting plates, the two clamping blocks are respectively connected to the second ends of the two connecting plates, the connecting plates are inserted into the mounting grooves, and the clamping blocks are clamped with the card interfaces.

9. The medical puncture device with rebound protection function according to claim 8, characterized in that: The connecting assembly further includes a second spring, which is disposed between the two connecting plates, and a first end of the second spring is connected to one of the connecting plates, and a second end of the second spring is connected to the other connecting plate.

10. The medical puncture device with rebound protection function according to claim 8, characterized in that: The handle portion also includes a third spring, which is arranged in the mounting groove of the handle portion, and the first end of the third spring is connected to the bottom of the mounting groove, and the second end of the third spring is free. When the connecting plate is inserted into the mounting groove, the third spring can be compressed and deformed, thereby generating an elastic thrust on the entire connecting assembly.

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