CN220141705U

CN220141705U - Biopsy puncture outfit

Info

Publication number: CN220141705U
Application number: CN202321097535.6U
Authority: CN
Inventors: 咸伟; 司建平; 岳颖; 董吉; 董延琥
Original assignee: Second People's Hospital Of Henan Province
Current assignee: Second People's Hospital Of Henan Province
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-12-08
Anticipated expiration: 2033-05-09

Abstract

The utility model relates to the technical field of biopsy tools for medical treatment, in particular to a biopsy puncture outfit, which comprises a suction barrel, wherein a puncture needle is arranged at one end of the suction barrel, a suction driving mechanism is arranged at the other end of the suction barrel, a negative pressure piston and a suction rod are arranged in the suction barrel, the negative pressure piston is arranged in the suction barrel, the outer side wall of the negative pressure piston is attached to the inner wall of the suction barrel, the suction rod is arranged at one end of the negative pressure piston, and one end of the suction rod, which is far away from the negative pressure piston, extends out of the suction barrel and drives the negative pressure piston to be movably connected with the suction barrel under the action of the suction driving mechanism. The utility model has better stability and more convenient operation when performing biopsy puncture.

Description

Biopsy puncture outfit

Technical Field

The utility model relates to the technical field of medical biopsy tools, in particular to a biopsy puncture outfit.

Background

Puncture biopsy is a main method for obtaining histopathological diagnosis of bone and soft tissue tumor by taking materials for related focus through puncture and performing biopsy and making pathological diagnosis.

The existing puncture tools are generally needle cylinder type puncture outfits, when in use, a user holds the needle cylinder by one hand and operates the drawing driving mechanism by the other hand. For example, chinese patent publication No. CN104605899A, entitled "A biopsy tool for extracting tissue from thyroid lesions" is an utility model patent directed to a device for the biopsy of thyroid cells. When the suction device is used, the suction cylinder is held by one hand, and the push rod is pulled by the other hand to extract the patient tissues.

The above-mentioned prior art has following technical defect, and doctor is after inserting patient focus with the pjncture needle, and one hand needs to hold up the suction cylinder, and the other hand still needs to carry out the push-and-pull of push rod, and two hands act on the puncture ware simultaneously, are difficult to carry out better accuse to focus position, and the in-process of pull push rod moreover, and the staff can produce unconscious shake, not only influences patient tissue's extraction effect, can also bring certain misery for the patient because of the shake, and the operation is more troublesome.

If the suction tube is held by the hand and the puncture position is stabilized, the doctor can push and pull the push rod independently, so that the extraction of diseased tissues at the focus can be greatly stabilized, but the labor cost can be increased, the cost of puncture biopsy can be increased, and the treatment cost can be further increased.

Disclosure of Invention

Aiming at the defects in the background technology, the utility model provides a biopsy puncture outfit, which has better stability and more convenient operation compared with the traditional syringe type puncture outfit when performing biopsy puncture.

The technical scheme of the utility model is realized as follows:

the biopsy puncture outfit comprises a suction barrel, wherein a puncture needle is arranged at one end of the suction barrel, a suction driving mechanism is arranged at the other end of the suction barrel, a negative pressure piston and a suction rod are arranged in the suction barrel, the negative pressure piston is arranged in the suction barrel, the outer side wall of the negative pressure piston is attached to the inner wall of the suction barrel, the suction rod is arranged at one end of the negative pressure piston, one end of the suction rod, far away from the negative pressure piston, extends out of the suction barrel, and the suction rod is driven to be movably connected with the suction barrel under the action of the suction driving mechanism.

Further, a limiting component is arranged between the negative pressure piston and the suction cylinder and comprises a limiting groove formed in the inner cylinder wall of the suction cylinder, the limiting groove is parallel to the length direction of the suction cylinder, and a limiting block tightly attached to the inner wall of the limiting groove is fixed on the side wall of the negative pressure piston.

Further, the negative pressure piston and the limiting block are rubber blocks.

Further, the drawing driving mechanism comprises a mounting cylinder, the mounting cylinder is sleeved and connected with the drawing cylinder in a threaded manner, one end of the mounting cylinder is fixedly provided with a mounting plate, a mounting ring coaxially arranged with the drawing rod is rotatably arranged on the mounting plate, and the drawing rod is arranged in an inner ring hole of the mounting ring in a penetrating manner;

be equipped with driving motor on the mounting panel, driving motor is located one side of a mounting section of thick bamboo, is equipped with the interlock gear I that sets up with the collar is coaxial on the collar, takes out the pull rod and is the screw rod, takes out the pull rod and pass the hole of interlock gear I and with interlock gear I threaded connection, is equipped with interlock gear II on driving motor's the output shaft, is connected through the interlock gear III that rotates the setting on the mounting panel between interlock gear I and the interlock gear II.

Further, the radius of the wheel surface of the interlocking gear I is larger than that of the interlocking gear III, and the radius of the wheel surface of the interlocking gear III is larger than that of the interlocking gear II.

Further, the mounting plate is provided with a power supply battery electrically connected with the driving motor, and the power supply battery and the driving motor are symmetrically arranged on the mounting plate about the central axis of the mounting cylinder.

Further, the driving motor is a servo motor, and a switch and a speed regulating knob for controlling the driving motor to run are arranged on the outer side of the suction cylinder.

Further, a baffle cylinder is sleeved outside the mounting plate, a baffle plate I and a baffle plate II are respectively fixed at two ends of the baffle cylinder, a connecting hole matched with the outer cylinder of the mounting cylinder is formed in the baffle plate I, the mounting cylinder extends to the connecting hole and is fixedly connected with the hole wall of the connecting hole, and the driving motor and the power supply battery are both positioned between the baffle plate I and the mounting plate;

the baffle II is provided with a through hole which is convenient for the drawing rod to extend out, and the linkage gear I, the linkage gear II and the linkage gear III are all positioned between the baffle II and the mounting plate.

Further, one end of the drawing rod, which is far away from the negative pressure piston, extends out of the through hole and is fixed with a spherical end block.

Further, an observation hole is formed in the suction cylinder, an observation strip is embedded in the observation hole, and scales are arranged on the observation strip.

The utility model has the beneficial technical effects that the driving motor can drive the negative pressure piston to move in the suction cylinder through the gear and the suction rod, so that the extraction of the patient tissues is realized, and meanwhile, the extraction amount of the patient tissues can be controlled by controlling the operation of the driving motor;

the power supply battery not only can supply power for the driving motor, but also can play a role of balancing weight, so that the stability is better when the utility model is applied;

the baffle cylinder and the baffle sheet play a role in protecting the driving motor, the linkage gear and the power supply battery, so that the service life of the utility model can be prolonged;

the scale on the observation strip can more intuitively observe the extraction amount of the patient tissue, avoid more or less extraction, and reduce unnecessary pain of patients.

Drawings

In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the structure of the present utility model with the shield cylinder and the shield removed;

FIG. 3 is a schematic cross-sectional view of the present utility model;

fig. 4 is an enlarged schematic view of a portion a in fig. 3.

In the figure, 11, a suction cylinder; 12. a puncture needle; 21. a negative pressure piston; 22. a pull rod; 31. a limiting block; 32. a limit groove; 41. a mounting cylinder; 42. a mounting plate; 43. a linkage gear I; 44. a linkage gear II; 45. a linkage gear III; 46. a driving motor; 47. a power supply battery; 51. a blocking cylinder; 52. a baffle I; 53. a baffle II; 6. an observation bar; 7. spherical end blocks.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.

Example 1:

referring to fig. 1 and 3, a biopsy puncture outfit comprises a suction barrel 11, wherein a puncture needle 12 is arranged at one end of the suction barrel 11, and a drawing driving mechanism is arranged at the other end of the suction barrel. The suction tube 11 is of a strip-shaped tube structure, one end of the suction tube 11 is a connecting end, and the puncture needle 12 is detachably inserted into the connecting end.

A negative pressure piston 21 and a drawing rod 22 are arranged in the drawing cylinder 11. The negative pressure piston 21 is a rubber block, the negative pressure piston 21 is positioned in the suction cylinder 11, the outer side wall of the negative pressure piston 21 is attached to the inner wall of the suction cylinder 11, and one side of the negative pressure piston 21, which is close to the connecting end of the suction cylinder 11, is matched with the inner cylinder bottom at the corresponding side of the suction cylinder 11. The drawing rod 22 is a rod member having a longitudinal direction parallel to the longitudinal direction of the suction cylinder 11, and the drawing rod 22 is fixed to one end of the negative pressure piston 21 and is disposed coaxially with the suction cylinder 11. The end of the drawing rod 22 far away from the negative pressure piston 21 extends out of the drawing cylinder 11 and drives the negative pressure piston 21 to be movably connected with the drawing cylinder 11 under the action of the drawing driving mechanism.

When the puncture needle head 12 is inserted into a lesion site, the negative pressure piston 21 is driven by the drawing driving mechanism to move towards one side far away from the puncture needle head 12, the negative pressure piston 21 can pump a cavity between the negative pressure piston 21 and the puncture needle head 12 in the suction cylinder 11 to be in a negative pressure state, so that lesion tissues of the lesion site enter the suction cylinder 11 through the puncture needle head 12, further tissue extraction of the lesion site is realized, and biopsy and pathological diagnosis of the lesion site are facilitated.

Referring to fig. 3 and 4, a limiting component is arranged between the negative pressure piston 21 and the suction cylinder 11, the limiting component comprises a limiting groove 32 formed in the inner cylinder wall of the suction cylinder 11, the limiting groove 32 is parallel to the length direction of the suction cylinder 11, a limiting block 31 tightly attached to the inner wall of the limiting groove 32 is fixed on the side wall of the negative pressure piston 21, and the limiting block 31 is a rubber block. The stopper 31 can be driven to move in the corresponding limiting groove 32 when the negative pressure piston 21 moves, the air tightness of the closely attached stopper 31 and the wall of the limiting groove 32 can be ensured when the negative pressure piston 21 moves, and the normal operation of extracting patient tissues is ensured.

Referring to fig. 2 and 3, the drawing drive mechanism includes a mounting cylinder 41, and the mounting cylinder 41 is sleeved and screwed on the suction cylinder 11. The mounting barrel 41 is located on the aspiration barrel 11 at the end of the aspiration barrel 11 remote from the needle 12. One end of the mounting cylinder 41 far away from the puncture needle 12 is fixed with a mounting plate 42, a rotating hole is formed in the mounting plate 42, and a mounting ring coaxially arranged with the drawing rod 22 is rotatably arranged in the rotating hole through a bearing. The end of the pull rod 22 remote from the negative pressure piston 21 passes through the inner ring hole of the mounting ring and extends to the outside of the mounting cylinder 41.

The mounting plate 42 is a long sheet-like plate member, and the mounting plate 42 is coaxially disposed with the mounting cylinder 41. The side of the mounting plate 42 facing the needle 12 is provided with a drive motor 46, the drive motor 46 being located on one side of the mounting barrel 41. The mounting ring is provided with a linkage gear I43, and the linkage gear I43 and the mounting ring are coaxially arranged. Further, the pull rod 22 is a screw rod, and the pull rod 22 passes through the inner hole of the linkage gear I43 and is in threaded connection with the linkage gear I43. The output shaft of the drive motor 46 extends through the mounting plate 42 to a side remote from the needle 12, and the output shaft of the drive motor 46 is rotatably connected to the mounting plate 42 by a bearing. The output shaft of the driving motor 46 is provided with a linkage gear II 44, the mounting plate 42 is rotatably provided with a linkage gear III 45 meshed with the linkage gear I43 and the linkage gear II 44, and the linkage gear I (43) and the linkage gear II (44) are in transmission connection through the linkage gear III (45) rotatably arranged on the mounting plate (42).

Further, the radius of the tread of the interlocking gear I43 is larger than the radius of the tread of the interlocking gear III 45, and the radius of the tread of the interlocking gear III 45 is larger than the radius of the tread of the interlocking gear II 44. The interlocking of the interlocking gear I43, the interlocking gear II 44 and the interlocking gear III 45 can play a role in decelerating the driving motor 46, and the excessive speed in the process of extracting the patient tissues is avoided.

When the driving motor 46 operates, the corresponding linkage gear II 44 can be driven to rotate, so that the linkage gear II 44 drives the linkage gear III 45 to rotate, and then the linkage gear I43 is driven to rotate, and further the driving motor 46 drives the drawing rod 22. Because the limit component is arranged between the negative pressure piston 21 fixedly connected with the pull rod 22 and the suction cylinder 11, the pull rod 22 is not driven to synchronously rotate when the linkage gear I43 rotates, so that the movement of the pull rod 22 in the inner hole of the linkage gear I43 can be realized, the movement of the negative pressure piston 21 in the suction cylinder 11 can be realized, and the extraction of the lesion tissue can be realized.

Further, the driving motor 46 is a servo motor, and has the characteristic of being convenient for controlling the rotation speed and steering. The outside of the suction cylinder 11 is provided with a switch for controlling the operation of the driving motor 46, preferably a push contact type switch, and a speed regulating knob, preferably a resistance type speed regulating knob.

When a doctor extracts the tissue of the patient, the operation of the driving motor 46 can be controlled through the switch of the driving motor 46 and the speed regulating knob, so that the movement control of the negative pressure piston 21 in the suction cylinder 11 is realized, the doctor does not need to drive the negative pressure piston 21 to move in a manual drawing mode, the tissue of the patient is more conveniently extracted, in addition, the extraction process does not need to be operated by two hands, the operation can be completed by one hand, the operation is simpler, the doctor can vacate the other hand to better determine the puncture position of the puncture needle head 12, and the puncture stability is better.

The mounting plate 42 is provided with a power supply battery 47 electrically connected to the drive motor 46, and the power supply battery 47 is provided on the mounting plate 42 symmetrically with the drive motor 46 about the center axis of the mounting cylinder 41. The power supply battery 47 not only can supply power to the driving motor 46, but also can play a role of a balance weight, so that the utility model has better stability in application.

The outside of the mounting plate 42 is sleeved with a baffle cylinder 51, and both ends of the baffle cylinder 51 are respectively fixed with a baffle I52 and a baffle II 53 which are matched with the ports of the baffle cylinder 51. The baffle I52 is provided with a connecting hole matched with the outer cylinder of the mounting cylinder 41, the mounting cylinder 41 extends to the connecting hole and is fixedly connected with the wall of the connecting hole, and the driving motor 46 and the power supply battery 47 are both positioned between the baffle I52 and the mounting plate 42.

The baffle II 53 is provided with a through hole which is convenient for the pull rod 22 to extend out, and the linkage gear I43, the linkage gear II 44 and the linkage gear III 45 are all positioned between the baffle II 53 and the mounting plate 42.

The blocking cylinder 51 and the blocking piece play a role in isolating the driving motor 46, the linkage gear and the power supply battery 47, play a certain role in protecting the driving motor 46, the linkage gear and the power supply battery 47, and further prolong the service life of the utility model.

Example 2:

this example is a further improvement over example 1.

Referring to fig. 1, in this embodiment, a suction tube 11 is provided with a viewing hole, a glass viewing bar 6 is embedded in the viewing hole, and scales (not shown) are provided on the viewing bar 6. When in use, a doctor can more intuitively observe the extraction amount of the patient tissue according to the scale on the observation strip 6, and avoid more or less extraction.

In addition, the end of the drawing rod 22 far away from the negative pressure piston 21 extends out of the through hole on the baffle II 53 and is connected with the spherical end block 7 in a threaded manner.

The spherical end block 7 can prevent the drawing rod 22 from moving into the mounting cylinder 41, and meanwhile, the spherical end block 7 is more convenient to detach by being in threaded connection with the drawing rod 22, so that the drawing rod 22 is more convenient to detach in the utility model.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A biopsy punch comprising a suction cartridge (11), characterized in that: one end of the suction cylinder (11) is provided with a puncture needle (12), the other end of the suction cylinder is provided with a suction driving mechanism, a negative pressure piston (21) and a suction rod (22) are arranged in the suction cylinder (11), the negative pressure piston (21) is positioned in the suction cylinder (11) and the outer side wall of the negative pressure piston is attached to the inner wall of the suction cylinder (11), the suction rod (22) is arranged at one end of the negative pressure piston (21), and one end of the suction rod (22) far away from the negative pressure piston (21) extends out of the suction cylinder (11) and drives the negative pressure piston (21) to move in the suction cylinder (11) under the action of the suction driving mechanism;

a limiting component is arranged between the negative pressure piston (21) and the suction cylinder (11), the limiting component comprises a limiting groove (32) formed in the inner cylinder wall of the suction cylinder (11), the limiting groove (32) is parallel to the length direction of the suction cylinder (11), and a limiting block (31) tightly attached to the inner wall of the limiting groove (32) is fixed on the side wall of the negative pressure piston (21);

the drawing driving mechanism comprises a mounting cylinder (41), the mounting cylinder (41) is sleeved and connected to the suction cylinder (11) in a threaded manner, one end of the mounting cylinder (41) is fixedly provided with a mounting plate (42), a mounting ring which is coaxially arranged with the drawing rod (22) is rotatably arranged on the mounting plate (42), and the drawing rod (22) is arranged in an inner ring hole of the mounting ring in a penetrating manner;

a driving motor (46) is arranged on the mounting plate (42), the driving motor (46) is positioned on one side of the mounting cylinder (41), a linkage gear I (43) which is coaxially arranged with the mounting ring is arranged on the mounting ring, the drawing rod (22) is a screw rod, the drawing rod (22) passes through an inner hole of the linkage gear I (43) and is in threaded connection with the linkage gear I (43), a linkage gear II (44) is arranged on an output shaft of the driving motor (46), and the linkage gear I (43) is in transmission connection with a linkage gear III (45) which is rotatably arranged on the mounting plate (42);

a baffle cylinder (51) is sleeved outside the mounting plate (42), baffle plates I (52) and II (53) are respectively fixed at two ends of the baffle cylinder (51), a connecting hole matched with the outer cylinder of the mounting cylinder (41) is formed in the baffle plates I (52), the mounting cylinder (41) extends to the connecting hole and is fixedly connected with the wall of the connecting hole, a power supply battery (47) electrically connected with the driving motor (46) is mounted on the mounting plate (42), and the driving motor (46) and the power supply battery (47) are both positioned between the baffle plates I (52) and the mounting plate (42);

the baffle II (53) is provided with a through hole which is convenient for the drawing rod (22) to extend out, and the linkage gear I (43), the linkage gear II (44) and the linkage gear III (45) are both positioned between the baffle II (53) and the mounting plate (42).

2. A biopsy punch as defined in claim 1, wherein: the negative pressure piston (21) and the limiting block (31) are rubber blocks.

3. A biopsy punch according to claim 1 or 2, wherein: the wheel surface radius of the interlocking gear I (43) is larger than the wheel surface radius of the interlocking gear III (45), and the wheel surface radius of the interlocking gear III (45) is larger than the wheel surface radius of the interlocking gear II (44).

4. A biopsy punch according to claim 3, wherein: the power supply battery (47) is symmetrically arranged on the mounting plate (42) and the driving motor (46) relative to the central axis of the mounting cylinder (41).

5. The biopsy punch as defined in claim 4, wherein: the driving motor (46) is a servo motor, and a switch and a speed regulating knob for controlling the driving motor (46) to run are arranged on the outer side of the suction cylinder (11).

6. A biopsy punch as defined in any one of claims 1-2, 4-5, wherein: one end of the drawing rod (22) far away from the negative pressure piston (21) extends out of the through hole and is fixed with a spherical end block (7).

7. The biopsy punch as defined in claim 6, wherein: an observation hole is formed in the suction cylinder (11), an observation strip (6) is embedded in the observation hole, and scales are arranged on the observation strip (6).