Device for taking out anchoring positioning needle of puncture positioner

Abstract

The utility model relates to the technical field of manufacturing of medical instruments, in particular to a device for taking out an anchoring positioning needle of a puncture positioning device, which is reasonable in structure, simple and convenient to operate and capable of remarkably improving the taking out efficiency and success rate of the anchoring positioning needle of the puncture positioning device, and is characterized by being provided with a round-tube-shaped positioning rod, and a positioning rod head is arranged at the front end of the positioning rod; the head of the positioning rod is in a conical cylinder shape, the positioning rod is sleeved with the needle tail guide sleeve, the needle tail guide sleeve is provided with a sleeve-shaped body, the outer wall of the front end of the positioning rod is provided with an annular protrusion to prevent the needle tail guide sleeve from being separated from the positioning rod, the rear end of the positioning rod is connected with the handle, and a hollow pipe cavity coaxial with the positioning rod is formed in the handle. The device for taking out the anchoring positioning needle of the puncture positioner is simple in structure and convenient to use, and therefore the problem that the anchoring positioning needle of the puncture positioner is difficult to take out in an operation at the present stage is solved.

Description

Technical field:

[0001] The utility model relates to the technical field of medical device manufacturing, in particular to a puncture locator anchoring positioning needle removal device which has a reasonable structure, is easy to operate and can significantly improve the efficiency and success rate of puncture positioning needle removal. Background technology:

[0002] Puncture positioning refers to the use of ultrasound, CT or magnetic resonance imaging to firmly hook the tissue around the lesion with an anchor hook under the guidance of CT before the operation. With the help of the surgeon's lifting and positioning line depth measurement, the lesion tissue to be removed hidden in the organ tissue is like being grabbed by the hand. For the surgeon, the lesion location can be quickly and accurately explored during the operation, and the tumor can be removed with maximum precision.

[0003] During the operation, the doctor needs to remove the anchoring positioning needle released before the operation. Since the anchoring positioning needle has been inserted into the lesion tissue, it is difficult to remove the anchoring positioning needle alone by hand. The doctor needs to remove the tissue around the anchoring hook together to remove the anchoring positioning needle. This process is cumbersome and difficult. In the process of removing the tissue around the anchoring hook, the surgical knife will also face the risk of touching the anchoring hook and causing damage to the knife. Summary of the invention:

[0004] In view of the shortcomings and deficiencies in the prior art, the utility model provides a puncture locator anchoring positioning needle removal device which has a reasonable structure, is easy to operate, and can significantly improve the efficiency and success rate of puncture positioning needle removal.

[0005] The utility model achieves this through the following measures:

[0006] A puncture locator anchor positioning needle removal device, characterized in that it is provided with a circular tubular positioning rod, a positioning rod head is provided at the front end of the positioning rod, the positioning rod head is in the shape of a cone, a needle tail guide sleeve is sleeved on the positioning rod, the needle tail guide sleeve has a sleeve-shaped main body, an annular protrusion is provided on the front end outer wall of the positioning rod to prevent the needle tail guide sleeve from detaching from the positioning rod, the rear end of the positioning rod is connected to a handle, and a hollow tubular cavity coaxially arranged with the positioning rod is provided in the handle.

[0007] The needle tail guide sleeve of the utility model is provided with a ring portion which is sleeved on the outer wall of the positioning rod and can slide along the positioning rod. The ring portion is arranged at one end of the needle tail guide sleeve close to the handle. Furthermore, the needle tail guide sleeve is in the shape of an inverted funnel, and the end with a narrow inner diameter is connected to the ring portion, so as to form a accommodating space at the front end of the positioning rod which is significantly larger than the guiding space of the positioning rod head, so as to facilitate the positioning needle tail to be inserted into the positioning rod.

[0008] The outer wall of the positioning rod of the utility model can be provided with a spiral groove to facilitate access to the lesion tissue. Furthermore, a spiral groove is provided on the outer wall of the positioning rod head.

[0009] The handle of the utility model includes a cylindrical tubular connecting part used to be connected to the rear end of the positioning rod, the rear end of the cylindrical tubular connecting part is connected to the holding part, a tubular cavity penetrating the front and rear ends of the holding part is opened in the holding part, and the tubular cavity is communicated with the cylindrical tubular connecting part, and the outer wall of the holding part is provided with a relatively arranged holding inner recess, and further, the surface of the holding inner recess is provided with anti-slip hemp texture; further, a conical tubular lumen is opened in the holding part, wherein the inner diameter of the front end of the tubular cavity is smaller than the inner diameter of the rear end of the tubular cavity, and the positioning needle is facilitated to be inserted by providing a trumpet-shaped inner wall.

[0010] The inner diameter of the cylindrical connecting part of the handle of the utility model is larger than the outer diameter of the rear end of the needle tail guide sleeve, so that when the needle tail guide sleeve moves backward along the positioning rod, a larger sliding displacement space can be obtained to avoid blocking the operating field of view.

[0011] The front end outer diameter of the positioning rod head of the utility model is smaller than the rear end outer diameter, and the angle between the outer wall of the positioning rod head and the central axis is 30°-60°, so as to facilitate entering the diseased tissue.

[0012] When the utility model is working, the positioning needle tail of the anchoring positioning needle is aligned with the needle tail guide sleeve, so that the positioning needle tail enters the positioning rod through the needle tail guide sleeve and continues to be pushed forward to expose the positioning needle tail from the rear of the handle. Subsequently, the needle tail guide sleeve is pinched and pulled backward by hand to make the needle tail guide sleeve slide backward on the positioning rod and slide to the front end of the handle to avoid blocking the operating field of view. Then, the positioning needle tail is pinched with one hand and the handle is pushed with the other hand to make the positioning rod head enter the lesion tissue along the direction of the anchoring positioning needle and contact the anchoring hook. In this case, the handle is kept in position and the positioning needle tail can be pulled out so that the anchoring positioning needle can be taken out of the lesion tissue with the help of the positioning rod head. After taking it out, the puncture locator anchoring positioning needle removal device is taken out as a whole through the handle.

[0013] Compared with the prior art, the utility model provides a puncture locator anchoring positioning needle removal device with a simple structure and easy use, thereby solving the problem that it is difficult to remove the puncture locator anchoring positioning needle during surgery at the current stage. Description of the drawings:

[0014] Attached Figure 1 It is a structural schematic diagram of the utility model.

[0015] Attached Figure 2 It is a schematic diagram of a use state of the utility model.

[0016] Attached Figure 3 yes Figure 1 A magnified schematic diagram of the center positioning club head area.

[0017] Figure numerals: needle tail guide sleeve 1, positioning rod 2, handle 3, anchoring positioning needle 4, lesion tissue 5, positioning rod head 6, annular protrusion 7, anchoring hook 8, positioning needle tail 9. Specific implementation method:

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Example:

[0020] As attached Figure 1 As shown, this example provides a puncture locator anchoring positioning needle removal device, which is provided with a cylindrical positioning rod 2, a positioning rod head 6 is provided at the front end of the positioning rod 2, and the positioning rod head 6 is in a conical tube shape. A needle tail guide sleeve 1 is sleeved on the positioning rod 2, and the needle tail guide sleeve 1 is provided with a sleeve-shaped body. An annular protrusion 7 is provided on the front end outer wall of the positioning rod 2 to prevent the needle tail guide sleeve 1 from detaching from the positioning rod 2, and the rear end of the positioning rod 2 is connected to a handle 3, and a hollow tubular cavity coaxially arranged with the positioning rod 2 is provided in the handle 3;

[0021] The needle tail guide sleeve 1 of this example is provided with a collar portion which is sleeved on the outer wall of the positioning rod 2 and can slide along the positioning rod 2. The collar portion is provided at one end of the needle tail guide sleeve close to the handle 3. The needle tail guide sleeve 1 is in the shape of an inverted funnel, and the end with a narrow inner diameter is connected to the collar portion, which is used to form a guide space at the front end of the positioning rod 2 whose accommodation space is significantly larger than the positioning rod head 6, so as to facilitate the positioning needle tail 9 to be inserted into the positioning rod 2;

[0022] In this example, a spiral groove may be provided on the outer wall of the positioning rod 2 to facilitate entry into the lesion tissue. Furthermore, a spiral groove may be provided on the outer wall of the positioning rod head 6;

[0023] The handle 3 in this example includes a cylindrical tubular connecting portion for connecting to the rear end of the positioning rod 2, the rear end of the cylindrical tubular connecting portion is connected to the holding portion, a lumen penetrating the front and rear ends of the holding portion is provided in the holding portion, and the lumen is communicated with the cylindrical tubular connecting portion, and the outer wall of the holding portion is provided with a holding inner concave portion arranged oppositely, and further, the surface of the holding inner concave portion is provided with anti-slip hemp grain; further, a conical tubular lumen is provided in the holding portion, wherein the inner diameter of the front end of the lumen is smaller than the inner diameter of the rear end of the lumen, and the positioning needle is conveniently inserted by providing a trumpet-shaped inner wall;

[0024] In this example, the inner diameter of the cylindrical connecting portion of the handle 3 is larger than the outer diameter of the rear end of the needle tail guide sleeve 1, so that when the needle tail guide sleeve 1 moves backward along the positioning rod 2, a larger sliding displacement space can be obtained to avoid blocking the operating field of view;

[0025] The front end outer diameter of the positioning rod head 6 is smaller than the rear end outer diameter, and the angle between the outer wall of the positioning rod head 6 and the central axis is 30°-60°, so as to facilitate entering the diseased tissue 5.

[0026] During operation, align the positioning needle tail 9 of the anchoring positioning needle 4 with the needle tail guide sleeve 1, so that the positioning needle tail 9 enters the positioning rod 2 through the needle tail guide sleeve 1, and continue to advance so that the positioning needle tail 9 is exposed from behind the handle 3. Then, pinch the needle tail guide sleeve 1 and pull it back to make the needle tail guide sleeve 1 slide backward on the positioning rod 2 and slide to the front end of the handle 3 to avoid blocking the operating field of view. Then, pinch the positioning needle tail 9 with one hand and push the handle 3 with the other hand to make the positioning rod head 6 enter the lesion tissue 5 along the direction of the anchoring positioning needle 4 and contact the anchoring hook 8. In this case, keep the handle 3 in place, pull out the positioning needle tail 9, and the anchoring positioning needle 4 can be removed from the lesion tissue 5 with the help of the positioning rod head. After removal, the puncture locator anchoring positioning needle 4 removal device is removed as a whole through the handle.

[0027] Compared with the prior art, the utility model provides a puncture locator anchoring positioning needle removal device with a simple structure and easy use, thereby solving the problem that it is difficult to remove the puncture locator anchoring positioning needle during surgery at the current stage.

Claims

1. A puncture locator anchoring positioning needle removal device, characterized in that: A tubular positioning rod is provided, and a positioning rod head is provided at the front end of the positioning rod. The positioning rod head is in the shape of a cone, and a needle tail guide sleeve is sleeved on the positioning rod. The needle tail guide sleeve has a sleeve-shaped main body. An annular protrusion is provided on the front end outer wall of the positioning rod to prevent the needle tail guide sleeve from detaching from the positioning rod. The rear end of the positioning rod is connected to a handle, and a hollow tubular cavity coaxially arranged with the positioning rod is provided in the handle.

2. A puncture locator anchoring needle removal device according to claim 1, characterized in that: The needle tail guide sleeve is provided with a collar portion which is sleeved on the outer wall of the positioning rod and can slide along the positioning rod. The collar portion is arranged at one end of the needle tail guide sleeve close to the handle.

3. A puncture locator anchoring needle removal device according to claim 2, characterized in that: The needle tail guide sleeve is in the shape of an inverted funnel, and the end with a narrow inner diameter is connected to the ring portion, which is used to form a accommodating space at the front end of the positioning rod that is significantly larger than the guiding space of the positioning rod head, so as to facilitate the positioning needle tail to be inserted into the positioning rod.

4. A puncture locator anchoring needle removal device according to claim 1, characterized in that: A spiral groove may be provided on the outer wall of the positioning rod to facilitate access to the lesion tissue.

5. The puncture locator anchoring needle removal device according to claim 1, characterized in that: The handle includes a cylindrical cylindrical connecting part for connecting to the rear end of the positioning rod, the rear end of the cylindrical cylindrical connecting part is connected to the holding part, a tubular cavity is opened in the holding part to pass through the front and rear ends of the holding part, and the tubular cavity is communicated with the cylindrical cylindrical connecting part, and the outer wall of the holding part is provided with a relatively arranged holding inner recess.

6. A puncture locator anchoring needle removal device according to claim 5, characterized in that: The surface of the inner concave part of the grip is provided with anti-slip hemp texture.

7. The puncture locator anchoring needle removal device according to claim 5, characterized in that: The holding portion has a conical tubular cavity in which the inner diameter of the front end of the tubular cavity is smaller than the inner diameter of the rear end of the tubular cavity. The trumpet-shaped inner wall is provided to facilitate insertion of the positioning needle.

8. The puncture locator anchoring needle removal device according to claim 5, characterized in that: The inner diameter of the cylindrical tubular connecting portion of the handle is greater than the outer diameter of the rear end of the needle tail guide sleeve.

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