A positioning guidewire pushing device and a soft tissue positioning device comprising the same

Abstract

The application provides a positioning guide wire pushing device and a soft tissue positioning device comprising the same. The positioning guide wire pushing device comprises a pushing member comprising a pushing part and a guide wire fixing part; a pushing guide rail comprising a guide groove, the end of the guide groove being formed with a puncture needle tube mounting port for mounting a puncture needle tube; and the pushing member is combinedly mounted with the pushing guide rail so that the guide wire fixing part enters the inside of the guide groove and the pushing part is located outside the guide groove, and when the pushing part is pushed, the guide wire fixing part moves along the guide groove. With the positioning guide wire pushing device, an operator can complete the operation of marking soft tissue with a positioning guide wire by using one hand, the operation of marking soft tissue with a positioning guide wire is simplified, a single operator can also perform other operations while marking with a positioning guide wire, and the efficiency of preoperative preparation is improved.

Description

Technical Field

[0001] This invention belongs to the field of medical devices, specifically relating to a positioning guide wire pushing device and a soft tissue positioning device including the same. Background Technology

[0002] Soft tissue cancer is a common human disease. Small tumors are difficult to palpate during surgery. To accurately remove small lesions, preoperative marking and localization of the mass are necessary. Current clinical techniques utilize a localization needle consisting of a hollow tube puncture needle and a thin, elongated guidewire. The guidewire is used to mark the soft tissue preoperatively to assist the surgeon in locating the tumor during surgery. After the puncture needle reaches the target point, the guidewire is inserted into the tumor area. The puncture end of the guidewire has barbs. Before puncture, the tip of the hollow tube puncture needle is first inserted to the tumor site. Then, the guidewire is led out from the hollow tube puncture needle, and after the tip of the guidewire is inserted to the predetermined position, the hollow tube puncture needle is withdrawn. At this point, the guidewire remains in the tissue requiring localization, completing the localization process and facilitating accurate location and removal of the tumor during surgery.

[0003] Currently, when a positioning guidewire is needed for preoperative soft tissue localization, the puncture needle is placed over the positioning guidewire, and the soft tissue is punctured using the puncture needle. The positioning guidewire is then directly inserted into the designated position along with the puncture needle. When the positioning guidewire needs to be withdrawn from the puncture needle, the operator needs to hold and fix the puncture needle with one hand and push the positioning guidewire along the puncture needle with the other hand, which causes inconvenience in the operation. If other operations, such as ultrasound imaging, are required during soft tissue localization, it cannot be completed by a single person. Summary of the Invention

[0004] The purpose of this invention is to provide a positioning guidewire pushing device and a soft tissue positioning device including the same, so as to realize the operation of positioning soft tissue with guidewire by one hand.

[0005] According to one aspect of the present invention, a positioning guidewire pushing device is provided, comprising: a pushing member including a pushing portion and a guidewire fixing portion; a pushing guide rail including a guide groove, the end of which forms a puncture needle tube mounting port for mounting a puncture needle tube; the pushing member and the pushing guide rail are assembled together so that the guidewire fixing portion enters the interior of the guide groove, the pushing portion is located outside the guide groove, and the guidewire fixing portion moves along the guide groove when the pushing portion is pushed. In the above-described positioning guidewire pushing device, the provided guidewire fixing portion can fix the positioning guidewire used for soft tissue marking. Through the combined assembly of the pushing member and the pushing guide rail, the positioning guidewire is confined in the guide groove of the pushing guide rail, causing the positioning guidewire to move along the pushing guide rail, thereby passing through the puncture needle tube mounting port of the guide groove, entering the puncture needle tube, passing through the needle tip of the puncture needle tube, and finally reaching the location of the soft tissue to be marked. The operator can perform the above operations with one hand. The above operations can not only control and fix the puncture needle, but also directionally push the positioning guidewire, so that the positioning guidewire accurately reaches the location of the soft tissue to be marked. This simplifies the operation of marking soft tissue with the positioning guidewire. A single operator can also perform other operations at the same time while marking with the positioning guidewire, which improves the efficiency of preoperative preparation.

[0006] Preferably, at least one limiting part is provided in the guide groove, which is used to restrict the movement of the guide wire fixing part in the guide groove. By providing the limiting part, the travel path of the positioning guide wire in the guide groove can be controlled by limiting the guide wire fixing part, thereby improving the positioning accuracy of the positioning guide wire.

[0007] Preferably, the portion of the guidewire fixing part that enters the guide groove is rotatably mounted in the guide groove; the limiting part provided in the guide groove is a retaining groove, which engages with the pushing part when the guidewire fixing part is limited by the limiting part. Preferably, the limiting part includes a second limiting part, which is used to restrict the movement of the guidewire fixing part in the guide groove when the positioning guidewire reaches a predetermined position. By providing the second limiting part, it can be ensured that the positioning guidewire accurately reaches the location of the soft tissue to be marked, thus improving the controllability of soft tissue marking.

[0008] Preferably, the limiting part further includes a first limiting part, and the first limiting part and the second limiting part are arranged sequentially along the direction in which the pushing member pushes the positioning guide wire. Before pushing the positioning guide wire, the first limiting part can be used to prevent the pushing member from sliding relative to the pushing guide rail, thereby preventing the positioning guide wire from prematurely dislodging from the needle tip of the puncture needle tube.

[0009] Preferably, the guidewire fixing part includes a push tube extending along the guide groove, the push tube being into which the positioning guidewire extends. Preferably, the push tube extends beyond the puncture needle mounting port of the guide groove.

[0010] The aforementioned push tube is a slender hollow pipe that is fitted over the positioning guide wire. It not only limits the positioning guide wire but also protects it.

[0011] Preferably, the guide wire fixing part further includes a guide wire inlet, which is connected to the push tube. The cross-section of the guide wire inlet is tapered, and the inner diameter of the guide wire inlet gradually decreases towards the push tube.

[0012] Preferably, the pushing part is provided with anti-slip texture.

[0013] According to another aspect of the present invention, a soft tissue positioning device is provided, comprising the above-mentioned soft tissue positioning guide wire pushing device, a puncture needle tube, and a positioning guide wire. The puncture needle tube is installed at the puncture needle tube mounting port and communicates with the guide groove. The positioning guide wire passes through the guide wire fixing part and enters the interior of the puncture needle tube along the guide groove.

[0014] Using the aforementioned soft tissue positioning device, the operator can accurately, controllably, and easily complete the positioning guide wire marking of soft tissue with one hand. This allows for other operations to be performed simultaneously with soft tissue marking, thereby improving the operational flexibility of preoperative preparation for soft tissue resection.

[0015] Preferably, a limiting part is provided in the guide groove to restrict the movement of the guide wire fixing part in the guide groove. The limiting part includes a first limiting part and a second limiting part, which are arranged sequentially along the direction in which the pusher pushes the positioning guide wire. A positioning mark is provided on the positioning guide wire. When the movement of the guide wire fixing part is restricted by the first limiting part, the positioning mark is close to the end of the guide wire fixing part near the needle end of the puncture needle tube. By providing a positioning mark on the positioning guide wire, rapid positioning and assembly of the positioning guide wire and the guide wire fixing part can be achieved.

[0016] Preferably, the soft tissue positioning device further includes a puncture needle holder, which is installed at the beginning of the puncture needle installation port, and the puncture needle is fixedly installed in the puncture needle holder. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the pushing component of the positioning guide wire pushing device in Example 1;

[0018] Figure 2 This is a schematic diagram of the push rail structure of the positioning guide wire pushing device in Example 1;

[0019] Figure 3 This is a schematic diagram of the positioning guidewire.

[0020] Figure 4 This is a schematic diagram of the soft tissue positioning device provided in Example 2 before the positioning guidewire is pushed.

[0021] Figure 5 This is a schematic diagram of the soft tissue positioning device provided in Example 2 after the positioning guide wire is pushed.

[0022] The correspondence of the reference numerals in the above figures is as follows: 01. Positioning guide wire, 02. Positioning mark, 03. Positioning hook, 11. Pushing component, 12. Pushing part, 13. Pushing tube, 21. Pushing guide rail, 22. Second limiting part, 23. Guide groove, 24. First limiting part, 31. Puncture needle tube seat, 32. Puncture needle tube.

[0023] Specific implementation methods

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Example 1

[0026] This embodiment relates to a positioning guide wire pushing device, which includes a pushing member 11 and a pushing guide rail 21. Figure 1 As shown, the pusher 11 includes a pusher part 12 and a guide wire fixing part. In this embodiment, the pusher part 12 is a push button, and the push button is also provided with anti-slip texture. The guide wire fixing part includes a guide wire inlet and a push tube 13 that are connected. The cross-section of the guide wire inlet is conical, and the inner diameter of the guide wire inlet gradually decreases in the direction close to the push tube 13. The push tube 13 is a slender hollow pipe. Figure 2 The internal structure of the push guide rail 21 is shown. The push guide rail 21 has a through guide groove 23. The end of the guide groove 23 forms a puncture needle mounting port for mounting the puncture needle tube 32. Limiting portions are provided on the side of the guide groove 23 along its extension direction. In this embodiment, the limiting portions are slots formed on the side of the guide groove 23. There are two limiting portions: the limiting portion closer to the guide wire inlet is the first limiting portion 24, and the limiting portion farther from the guide wire inlet is the second limiting portion 22. In other specific embodiments, the number of limiting portions can be increased adaptively according to specific circumstances.

[0027] The pusher 11 and the pusher rail 21 are assembled and installed so that the wire fixing part of the pusher 11 passes through the guide groove 23. The pusher part 12 of the pusher 11 is located outside the guide groove 23. When the pusher part 12 is pushed, the wire fixing part moves along the guide groove 23. Furthermore, the wire fixing part can rotate a certain angle in the guide groove 23. In this embodiment, the pusher tube 13 included in the wire fixing part extends beyond the guide groove 23.

[0028] Example 2

[0029] This embodiment uses the positioning guide wire pushing device provided in Embodiment 1, along with the positioning guide wire 01, puncture needle tube 32, and puncture needle tube seat 31, to assemble a soft tissue positioning device.

[0030] Positioning guide wire 01 applicable to the above-mentioned positioning guide wire pushing device, such as Figure 3 As shown, the guide wire body is long and thin, and a positioning mark 02 is fixedly set on the guide wire body. The outer diameter of the positioning mark 02 is slightly larger than the outer diameter of the guide wire body. In its natural state, the end of the guide wire body is pre-bent into a circular positioning hook 03. The raw material of the positioning guide wire 01 is mainly composed of nickel-titanium alloy or similar memory metal with memory properties.

[0031] The pusher 11 and the pusher rail 21 of the positioning guide wire pusher are combined and installed so that the guide wire fixing part of the pusher 11 passes through the guide groove 23 and the pusher part 12 of the pusher 11 is located outside the guide groove 23. The pusher part 12 of the pusher 11 is rotated to the first limiting part 24 and the pusher part 12 and the first limiting part 24 are engaged with each other to fix the pusher 11 in the first limiting part 24.

[0032] like Figure 4 As shown, the positioning guidewire 01 is fixedly assembled with the guidewire fixing part. The positioning guidewire 01 enters the push tube 13 from the guidewire inlet of the guidewire fixing part, so that the positioning mark 02 of the positioning guidewire 01 is close to the front end of the push tube 13. Then, the puncture needle tube seat 31, on which the puncture needle tube 32 is fixedly installed, is installed in the puncture needle tube installation port of the guide groove 23, thereby realizing the connection between the puncture needle tube 32 and the guide groove 23. The positioning guidewire 01 and the push tube 13 sleeved outside the positioning guidewire 01 extend into the puncture needle tube 32. At this time, the end of the positioning guidewire 01 is temporarily straightened by the restriction of the puncture needle tube 32. At this time, the doctor can puncture the needle tip of the puncture needle tube 32 to the suspicious soft tissue.

[0033] When the needle tip reaches the suspicious soft tissue, such as Figure 5 As shown: Rotate the pushing part 12 of the pusher 11 to disengage it from the first limiting part 24. Use your thumb to turn the pushing part 12 of the guide wire pushing device, causing the guide wire fixing part of the guide wire pushing device to leave the first limiting part 24 and push it forward along the guide groove 23. Once the pushing part 12 reaches its end, rotate the pushing part 12 of the pusher 11 to the second limiting part 22, and engage it with the second limiting part 22 to fix the pusher 11 in place. During this process, the end of the positioning guide wire 01 will be inserted into the suspected soft tissue to be marked. Due to the characteristics of shape memory metal, the end of the positioning guide wire 01 gradually returns to a circular positioning hook 03. Thus, the positioning guide wire 01 is fixed at the suspected soft tissue. At this point, except for the positioning guide wire 01, remove the rest of the soft tissue positioning device; the suspected soft tissue is marked by the positioning guide wire 01.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A soft tissue positioning device, characterized in that: Includes a guidewire delivery device, a puncture needle, and a guidewire. The positioning guide wire pushing device includes: a pushing component, comprising a pushing part and a guide wire fixing part; A pusher rail includes a guide groove, the end of which forms a puncture needle mounting port for installing a puncture needle; the pusher is assembled with the pusher rail so that the guide wire fixing part enters the interior of the guide groove, the pusher is located outside the guide groove, and when the pusher is pushed, the guide wire fixing part moves along the guide groove; The puncture needle tube is installed in the puncture needle tube installation port and communicates with the guide groove. The positioning guide wire passes through the guide wire fixing part and enters the interior of the puncture needle tube along the guide groove. The positioning guidewire is made of a shape memory metal with shape memory properties; in its natural state, the end of the positioning guidewire is pre-bent into a circular positioning hook; when the positioning guidewire is inserted into the puncture needle tube, the end of the positioning guidewire is temporarily straightened by the restriction of the puncture needle tube. The guide groove is provided with a limiting part, which is used to restrict the movement of the guide wire fixing part in the guide groove. The limiting part includes a first limiting part and a second limiting part, and the first limiting part and the second limiting part are arranged sequentially along the direction in which the pusher pushes the positioning guide wire. The positioning guidewire is equipped with positioning marks; When the guidewire fixing part is restricted from moving by the first limiting part, the positioning mark is close to the end of the guidewire fixing part near the needle end of the puncture needle tube.

2. The soft tissue positioning device as described in claim 1, characterized in that: The guide groove is provided with at least one limiting part, which is used to restrict the movement of the guide wire fixing part in the guide groove.

3. The soft tissue positioning device as described in claim 2, characterized in that: The portion of the guide wire fixing part that enters the guide groove is rotatably installed in the guide groove; the limiting part provided in the guide groove is a slot, and when the limiting part is used to limit the guide wire fixing part, the limiting part engages with the pushing part.

4. The soft tissue positioning device as described in claim 2, characterized in that: The limiting part includes a second limiting part, which is used to restrict the movement of the guide wire fixing part in the guide groove when the positioning guide wire reaches a predetermined position.

5. The soft tissue positioning device as described in claim 4, characterized in that: The limiting part further includes a first limiting part, which is arranged sequentially along the direction in which the positioning guide wire is pushed by the pusher.

6. The soft tissue positioning device as described in claim 1, characterized in that: The guide wire fixing part includes a push tube extending along the guide groove, into which the positioning guide wire extends.

7. The soft tissue positioning device as described in claim 6, characterized in that: The push tube extends beyond the puncture needle mounting port of the guide groove.

8. The soft tissue positioning device as described in claim 6, characterized in that: The guide wire fixing part also includes a guide wire inlet, which is connected to the push tube. The cross-section of the guide wire inlet is tapered, and the inner diameter of the guide wire inlet gradually decreases towards the push tube.

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