CN219645776U - Biopsy puncture outfit suitable for extracting bone tissue - Google Patents

Abstract

The utility model relates to a biopsy punch suitable for extracting bone tissue, comprising: the outer positioning assembly comprises a positioning outer tube and a positioning inner core, the positioning inner core comprises a rod body part with a solid tip, and when the positioning inner core is completely inserted into the positioning outer tube, at least part of the solid tip is exposed outwards from the positioning outer tube; the inner sampling assembly comprises a sampling inner tube and a connector provided with a second opening, the sampling inner tube is provided with a third end part which is configured to cut human tissues, and when the sampling inner tube is completely inserted into the positioning outer tube, at least part of the third end part is exposed outwards from the positioning outer tube; and the suction tube assembly comprises a suction tube clamping seat, a suction tube and a suction tube push rod, the suction tube clamping seat, the suction tube and the suction tube push rod can be detachably connected with the connector, a suction cavity with a variable volume is jointly limited by the suction tube and the suction tube push rod, the suction tube clamping seat is fixedly arranged on the suction tube and provided with a third opening communicated with the suction cavity, and when the suction tube clamping seat is in butt joint with the connector, the third opening is communicated with the second opening.

Description

Biopsy puncture outfit suitable for extracting bone tissue

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a biopsy puncture outfit suitable for extracting bone tissues.

Background

Biopsy puncture outfits are commonly used surgical medical instruments that are commonly used to extract living tissue inside a human lesion for pathology detection. The traditional biopsy puncture outfit mainly comprises a needle core part and a needle tube part, wherein the needle core part can be used for being inserted into human tissues and reaching the inside of a focus, and then the tissues in the focus enter the biopsy puncture outfit in a rotating or negative pressure suction mode, so that the extraction of pathological tissues is completed.

However, there is currently no dedicated biopsy punch on the market that is suitable for extracting bone tissue. The traditional biopsy puncture outfit has the defects that because of single tube operation, no auxiliary positioning component can finish focus positioning in bones, and puncture angles and puncture points are inconvenient to adjust in the clinical operation process; traditional biopsy penetrators also have no more powerful negative pressure aspiration components and have difficulty retaining bone tissue inside the penetrator during withdrawal. In addition, the traditional biopsy puncture outfit cannot complete multi-directional extraction operation, so that enough pathological tissues cannot be acquired for pathological biopsy once.

Disclosure of Invention

In order to solve the related technical problem that the traditional biopsy puncture outfit is inconvenient in extracting bone tissue, the utility model aims to provide the biopsy puncture outfit suitable for extracting bone tissue.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a biopsy punch adapted for extraction of bone tissue, comprising: the outer positioning assembly comprises a positioning outer tube and a positioning inner core, wherein the positioning outer tube is limited with a puncture channel, the positioning inner core can be inserted into the positioning outer tube, the puncture channel has a channel length, the positioning inner core comprises a rod body part with a solid tip capable of being inserted into human tissue, and the rod body length of the rod body part is larger than the channel length, so that when the positioning inner core is completely inserted into the positioning outer tube, at least part of the solid tip can be exposed out of the positioning outer tube; the inner sampling assembly comprises a sampling inner tube which can be inserted into the positioning outer tube and a connector provided with a second opening, the sampling inner tube is limited with a sampling channel positioned in the inner part and provided with a third end part and a fourth end part which are far away from each other, the third end part is of an open structure and is configured to cut human tissues rotationally around the axial lead of the sampling inner tube, and the length of the tube body of the sampling inner tube is longer than the length of the channel, so that at least part of the third end part can be exposed outwards from the positioning outer tube when the sampling inner tube is completely inserted into the positioning outer tube; the connector is fixedly arranged at the fourth end part of the sampling inner tube, and the second opening is communicated with the sampling channel; and the suction pipe assembly comprises a suction pipe clamping seat which can be detachably connected with the connector, a suction pipe and a suction pipe pushing rod which is in piston type movable connection with the suction pipe, a suction cavity with a variable volume is defined by the suction pipe and the suction pipe pushing rod, the suction pipe clamping seat is fixedly arranged on the suction pipe and provided with a third opening communicated with the suction cavity, and when the suction pipe clamping seat is in butt joint with the connector, the third opening is communicated with the second opening.

In the above technical solution, preferably, the positioning outer tube has a first end portion and a second end portion that are far away from each other, and the first end portion has an open structure; the outer positioning assembly further comprises a positioning tube handle fixedly arranged at the second end part, and the puncture channel is exposed out of the positioning tube handle. It may be further preferred that the positioning outer tube is injection molded integrally with the positioning tube handle.

In the above technical solution, preferably, the inner sampling assembly further includes a sampling tube handle fixedly disposed at a fourth end of the sampling inner tube, and the connector is fixedly disposed on the sampling tube handle.

In the above preferred embodiment, it is further preferred that the sampling tube, the sampling tube handle and the connector are integrally injection molded.

In the above technical solution, preferably, the length of the rod body of the sampling inner tube is greater than the length of the channel by 2cm.

In the above technical solution, preferably, the connector and the suction pipe holder may form a threaded connection.

In the above-described solution, preferably, the third end of the sampling inner tube is configured as an annular cutting blade or an annular serration.

In the above technical solution, preferably, the positioning outer tube has a first end portion that is open and can be exposed by the solid tip, and a first scale extending axially from the first end portion is disposed on a tube wall of the positioning outer tube.

In the above technical solution, preferably, the inner sampling assembly further includes an inner tube push rod detachably mounted on the connector, and the inner tube push rod has a handle portion suitable for one-hand pressing, so that the medical staff can push and pull the sampling inner tube.

Compared with the prior art, when the biopsy puncture outfit provided by the utility model extracts bone tissues, the biopsy puncture outfit can be used for inserting human tissues into a focus position through the positioning outer tube inserted with the positioning inner core, then the positioning inner core is pulled out, the sampling inner tube is inserted into the sampling inner tube, the connector is connected with the suction tube clamping seat, and the human tissues in the focus can be cut through rotating the sampling inner tube, and the cut human tissues are sucked into the sampling inner tube and the suction inner cavity through the suction tube assembly. Through the mode, more human tissues can be obtained at one time, and the human tissues can be better reserved when withdrawn. In addition, when the human tissue is extracted, the position and the direction of the third end part of the sampling inner tube can be adjusted by changing the position of the positioning outer tube, so that the human tissue with multiple positions and multiple directions can be extracted.

Drawings

FIG. 1 is a perspective view of an outer positioning assembly of a biopsy punch provided by the present utility model;

FIG. 2 is a perspective view of an internal sampling assembly of the biopsy punch provided by the present utility model;

fig. 3 is a perspective view of a suction tube assembly of the biopsy punch provided by the utility model.

The drawing is marked:

10. an outer positioning assembly; 20. an inner sampling assembly; 30. a suction tube assembly;

11. positioning the outer tube; 12. positioning a tube handle; 13. positioning the inner core;

21. sampling an inner tube; 22. a sampling tube handle; 23. a connector; 24. an inner tube push rod;

31. a suction tube clamping seat; 32. a suction tube; 33. suction tube push rod.

Detailed Description

In order to describe the technical content, constructional features, objects and effects of the utility model in detail, the technical solutions of the embodiments of the utility model will be described in conjunction with the accompanying drawings in the embodiments of the utility model, and it is apparent that the described embodiments are only some embodiments of the utility model, not all embodiments of the utility model. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a detailed description of various exemplary embodiments or modes of practice of the utility model. However, various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. Furthermore, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the specific shapes, configurations, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

Furthermore, spatially relative terms such as "under … …," "under … …," "under … …," "lower," "above … …," "upper," "above … …," "higher," "side" (e.g., as in "sidewall") and the like are used herein to describe one element's relationship to another element(s) as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" or "beneath" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "below … …" may include both upper and lower orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1-3 illustrate a biopsy punch adapted to extract bone tissue, which may be used to access human tissue and extract tissue at a lesion for pathological biopsy, in accordance with the present utility model. Specifically, the biopsy punch includes an outer positioning assembly 10 (see FIG. 1) that can position the extraction site, an inner sampling assembly 20 (see FIG. 2) that can establish a sampling channel, and a suction tube assembly 30 (see FIG. 3) that provides a negative pressure for sampling.

Referring to fig. 1, the outer positioning assembly 10 includes a positioning outer tube 11, a positioning tube handle 12 fixedly provided on the positioning outer tube 11, and a positioning inner core 13 insertable into the positioning outer tube 11. The positioning outer tube 11 defines a puncture channel located inside and has a first end and a second end remote from each other, the first end being of open configuration. The puncture passageway has a passageway length and is exposed outwardly from the first end. The outer tube wall of the positioning outer tube 11 is also provided with a first scale which extends from the first end part of the positioning outer tube 11 along the axial line direction of the positioning outer tube 11 so as to enable medical staff to observe the depth of the intervention of the positioning outer tube 11 into human tissues.

A positioning tube handle 12 is fixedly disposed at the second end of the positioning outer tube 11 and is configured for single-handed grasping by a healthcare worker to provide an impetus for the healthcare worker to operate the outer positioning assembly 10. The puncture channel of the positioning outer tube 11 is exposed from the positioning tube handle 12 (i.e., exposed outward from the second end of the positioning outer tube 11) and forms a first opening (not shown) for insertion of the positioning inner core 13 or the sampling inner tube 21 inside the positioning outer tube 11. Further, the positioning tube handle 12 is injection molded integrally with the positioning outer tube 11.

The positioning core 13 includes a first rod portion (not shown) and a first handle portion (not shown) integrally formed with the first rod portion. The first rod body has a rod body length greater than the channel length, and a side end of the first rod body, which is far away from the handle portion, is configured as a solid tip. The first handle portion is configured for single-handed operation by a healthcare worker and conforms to the outer contour of the positioning tube handle 12. When the positioning core 13 is completely inserted into the positioning tube handle 12, the first handle portion of the positioning core 13 is in contact with the positioning tube handle 12, and the first rod body portion of the positioning core 13 is inserted into the outer positioning tube 11 and the solid tip is exposed to the outside.

Referring to fig. 2, the inner sampling assembly 20 includes a sampling inner tube 21, a sampling tube handle 22 fixedly disposed at one end of the sampling inner tube 21, a connector 23 fixedly disposed on the sampling tube handle 22, and an inner tube push rod 24 detachably connected to the connector 23.

The sampling inner tube 21 defines a sampling passage located therein and has third and fourth ends spaced apart from each other, the third end being configured in an open configuration and being capable of rotatably cutting human tissue about the axis of the sampling inner tube 21. The sampling inner tube 21 has a rod body length formed in the direction of its own axis, which is longer than the above-mentioned channel length, so that the third end portion of the sampling inner tube 21 can be exposed from the first end portion of the positioning outer tube 11 when the sampling inner tube 21 is fully inserted into the positioning outer tube 11. In practical use, the exposed length is generally about 2cm, i.e., the length of the tube body of the sampling tube 21 is greater than the length of the puncture channel by 2cm. Wherein. The third end of the sampling inner tube 21 may be configured as an annular cutting blade or annular serrations; the sampling inner tube 21 is provided with a second scale extending from the third end in the axial direction.

The sampling tube handle 22 is fixedly arranged at the fourth end of the sampling inner tube 21, and can be used for the medical staff to apply force to rotate or pull out and insert the sampling inner tube 21. A connector 23 is fixedly arranged on the end of the sampling tube handle 22, which is remote from the sampling tube 21, and a second opening (not shown in the figure) is provided in the connector 23, which is in fluid communication with the sampling channel, for the sampling channel to open the suction lumen (see below). Wherein, sample inner tube 21, sample tube handle 22 and connector 23 are integrated injection molding.

The inner tube push rod 24 comprises a second rod body part detachably connected to the connector 23 and a second handle part fixedly connected with the rod body part. The second handle portion is configured for one-handed application of pressure by a medical practitioner to push the sampling tube 21 into movement. It will be appreciated that when the inner tube push rod 24 is separated from the connector 23, the second opening is exposed to the outside, i.e. the sampling channel of the sampling inner tube 21 is in fluid communication with the outside.

Referring to fig. 3, the suction tube assembly 30 includes a suction tube holder 31 detachably connectable to the connector 23, a suction tube 32, and a suction tube pushrod 33 in piston movable connection with the suction tube 32, the suction tube 32 and the suction tube pushrod 33 together defining a suction lumen (not shown) of variable volume.

The suction pipe holder 31 is fixedly provided on one side end portion of the suction pipe 32 and is integrally injection-molded with the suction pipe 32. The suction tube holder 31 is provided with a third opening (not shown) in fluid communication with the suction lumen. When the suction tube holder 31 is detachably connected with the connector 23, the third opening is communicated with the second opening, namely, the sampling channel, the second opening, the third opening and the suction cavity together form a semi-closed fluid channel. The detachable connection formed between the suction tube holder 31 and the connector 23 may be a threaded connection, a clamping connection, a magnetic connection, or the like. Further, the threaded connection has better structural strength and air tightness, and is simple and easy to implement, and the suction pipe clamping seat 31 and the connector 23 provided by the embodiment adopt a threaded connection mode.

The working principle of the biopsy puncture device is described as follows: the medical staff inserts the positioning outer tube 11 inserted with the positioning inner core 13 into human tissue with the assistance of the CT or C-arm, and the first end part of the positioning outer tube 11 reaches the inside of the focus; next, the positioning core 13 is pulled out, the sampling inner tube 21 is inserted into the positioning outer tube 11 and the third end of the sampling inner tube 21 is aligned with the first end of the positioning outer tube 11 to contact the human tissue inside the lesion; thirdly, detaching the inner tube push rod 24 connected to the connector 23 and connecting the suction tube clamping seat 31 with the connector 23; finally, the lesion tissue is cut by stepwise rotating the sampling inner tube 21 and the cut tissue is sucked into the sampling inner tube 21 by the suction tube push rod 33 until the sampling inner tube 21 is completely inserted into the positioning outer tube 11. By the above mode, the biopsy puncture device can progressively acquire human tissues at the focus for a plurality of times, and the acquired human tissues are cut off from the focus by the sampling inner tube 21, so that the human tissues can be better reserved in the sampling inner tube 21 when the inner tube 21 is sampled.

In addition, the medical staff can also make the sampling inner tube 21 extract the human tissue at the focus in multiple positions and angles by changing the position or orientation of the positioning outer tube 11 in the tissue extraction process. Thus, the living body penetrator is particularly suitable for extraction of bone tissue.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, the scope of which is defined in the appended claims, specification and their equivalents.

Claims (10)

1. A biopsy punch adapted for extraction of bone tissue, comprising:

the outer positioning assembly comprises a positioning outer tube and a positioning inner core, wherein the positioning outer tube is limited with a puncture channel, the positioning inner core can be inserted into the positioning outer tube, the puncture channel has a channel length, the positioning inner core comprises a rod body part with a solid tip capable of being inserted into human tissue, and the rod body length of the rod body part is larger than the channel length, so that when the positioning inner core is completely inserted into the positioning outer tube, at least part of the solid tip can be exposed out of the positioning outer tube;

the inner sampling assembly comprises a sampling inner tube which can be inserted into the positioning outer tube and a connector provided with a second opening, the sampling inner tube is limited with a sampling channel positioned in the inner part and provided with a third end part and a fourth end part which are far away from each other, the third end part is of an open structure and is configured to cut human tissues rotationally around the axial lead of the sampling inner tube, and the length of the tube body of the sampling inner tube is longer than the length of the channel, so that at least part of the third end part can be exposed outwards from the positioning outer tube when the sampling inner tube is completely inserted into the positioning outer tube; the connector is fixedly arranged at the fourth end part of the sampling inner tube, and the second opening is communicated with the sampling channel; and

the suction pipe assembly comprises a suction pipe clamping seat which can be detachably connected with the connector, a suction pipe and a suction pipe pushing rod which is in piston type movable connection with the suction pipe, a suction cavity with a variable volume is defined by the suction pipe and the suction pipe pushing rod, the suction pipe clamping seat is fixedly arranged on the suction pipe and provided with a third opening communicated with the suction cavity, and when the suction pipe clamping seat is in butt joint with the connector, the third opening is communicated with the second opening.

2. The biopsy punch adapted for use in extracting bone tissue according to claim 1, wherein said positioning outer tube has a first end and a second end spaced apart from each other, said first end being of an open configuration; the outer positioning assembly further comprises a positioning tube handle fixedly arranged at the second end part, and the puncture channel is exposed out of the positioning tube handle.

3. The biopsy punch of claim 2, wherein the positioning outer tube is integrally injection molded with the positioning tube handle.

4. The biopsy punch of claim 1, wherein the inner sampling assembly further comprises a sampling tube handle fixedly disposed at the fourth end of the sampling tube, and the connector is fixedly disposed on the sampling tube handle.

5. The biopsy punch of claim 4, wherein the sampling tube, the sampling tube handle, and the connector are integrally injection molded.

6. The biopsy punch of claim 1, wherein the length of the shaft of the sampling tube is greater than 2cm of the length of the channel.

7. The biopsy punch of claim 1, wherein the connector is threadably coupled to the suction tube holder.

8. The biopsy punch of claim 1, wherein the third end of the sampling inner tube is configured as an annular cutting blade or annular serration.

9. The biopsy punch of claim 1, wherein the positioning outer tube has a first end portion that is open and exposed to the outside by the solid tip, and a first scale extending axially from the first end portion is provided on a tube wall of the positioning outer tube.

10. The biopsy punch of claim 1, wherein the inner sampling assembly further comprises an inner tube push rod removably mounted to the connector, the inner tube push rod having a handle portion adapted for one-handed compression for pushing and pulling the sampling inner tube by a medical practitioner.