CN113288230A - Guiding needle inserting device of pleural disease biopsy needle and using method thereof - Google Patents

Abstract

The invention is suitable for the related technical field of medical instruments, and provides a guiding needle inserting device of a pleural disease biopsy needle, which comprises a support frame and a connecting frame arranged on the support frame in a sliding way, wherein the connecting frame is driven by a driving mechanism arranged on the support frame to move vertically; a bearing part is fixed on the connecting frame along the horizontal direction, and a clamping mechanism for fixing the biopsy needle is fixedly arranged on the bearing part; be located biopsy needle's vertical position department is provided with the cutting subassembly, the cutting unit mount with the mounting bracket that the acceptor passes through elastic component to be connected, just be provided with on the mounting bracket and be used for the drive the flexible subassembly of cutting unit motion, flexible subassembly by installing trigger mechanism control motion on the support frame. The invention can realize the automatic guide of the biopsy needle, and can realize the automatic cutting of the skin at the puncture position through the cutting assembly without the manual cutting of medical staff.

Description

Guiding needle inserting device of pleural disease biopsy needle and using method thereof

Technical Field

The invention belongs to the technical field related to medical instruments, and particularly relates to a guiding needle inserting device of a pleural disease biopsy needle and a using method thereof.

Background

A biopsy needle is a medical instrument used for sampling living tissues of pyramidal tumors, unknown tumors, and the like of various organs such as kidney, liver, lung, breast, thyroid, prostate, pancreas, testis, uterus, ovary, body surface, and the like, and sucking cells, and the like.

The pleura biopsy by needle punching is a simple, convenient and safe pleura disease diagnosis method, and most Abrams pleura biopsy needles are adopted, when the pleura disease operation is performed, a skin vertical incision with the length of 3mm is made at a puncturing part, the puncturing biopsy needles are punctured into a pleural cavity, a needle core is pulled out, and an injector is arranged to collect pleural effusion samples. Then the incision sleeve is rotated to expose the slotted hole of the outer sleeve, the incision sleeve is turned to the side or the lower part, the tissue is slightly pumped out to be embedded into the slotted hole, the incision sleeve is closed to cut the tissue in the needle, the puncture needle is pulled out, and the cut tissue is taken out from the inner sleeve for inspection.

However, before the needle insertion, medical staff is required to manually perform the skin incision and then perform the needle insertion operation of the biopsy needle, so that the operation time is relatively increased, the risk index is increased, the rapid operation of the skin incision and the needle insertion of the biopsy needle cannot be realized, and the automation degree is relatively low.

Disclosure of Invention

The invention provides a guiding needle inserting device for a pleural disease biopsy needle, and aims to solve the problems that before needle inserting, medical staff are required to manually perform skin incision and then perform needle inserting operation of the biopsy needle, so that the operation time is relatively prolonged, risk indexes are increased, rapid operation of the skin incision and the biopsy needle inserting cannot be realized, and the automation degree is relatively low.

The invention is realized in such a way that the guiding needle inserting device of the pleural disease biopsy needle is used for guiding the biopsy needle, and comprises a support frame and a connecting frame which is arranged on the support frame in a sliding way, wherein the connecting frame is driven by a driving mechanism arranged on the support frame to move vertically;

a bearing part is fixed on the connecting frame along the horizontal direction, and a clamping mechanism for fixing the biopsy needle is fixedly arranged on the bearing part;

be located the vertical position department of biopsy needle is provided with cutting assembly, cutting assembly install with the mounting bracket that the acceptor passes through elastic component and connects, just be provided with on the mounting bracket and be used for the drive the flexible subassembly of cutting assembly motion, flexible subassembly by installing trigger mechanism control motion on the support frame works as the mounting bracket is followed the acceptor vertical migration, and with during the trigger mechanism contact, flexible subassembly drive cutting assembly motion, and can drive cutting assembly and carry out the level and dodge.

Furthermore, the driving mechanism comprises a threaded rod rotatably installed on the support frame and a threaded sleeve which is in threaded connection with the threaded rod and fixedly connected with the connecting frame, and one end of the threaded rod is fixedly connected with an output shaft of a motor installed on the support frame.

Furthermore, the driving mechanism comprises a third electric telescopic rod arranged on the supporting frame, and the movable end of the third electric telescopic rod is fixedly connected with the connecting frame.

Furthermore, fixture including be the level place and with accept a fixed connection's first electric telescopic handle and articulate two relative clamping jaws that set up of first electric telescopic handle expansion end, the outer arc department of clamping jaw still through with it articulated regulation pole with first electric telescopic handle's fixed end is articulated.

Furthermore, the mounting bracket including be the sleeve pipe and the one end of level setting insert put in the sleeve pipe and through locking mechanism with the spacing adjustable shelf of sleeve pipe slip, cutting element rotate install on the adjustable shelf and with install telescopic component on the sleeve pipe is connected.

Furthermore, the cutting assembly comprises a disc rotatably mounted on the movable frame and a cutting knife fixed on the disc, a protrusion is arranged on one side of the disc far away from the cutting knife, the disc is connected with the telescopic assembly and can rotate under the action of the telescopic assembly, when the protrusion rotates along with the disc and is in contact with the locking mechanism, the locking mechanism reaches an unlocking state, and at the moment, the movable frame can slide along the sleeve;

and the movable frame is also provided with a limiting plate, and the limiting plate is used for limiting the rotation angle of the cutting knife.

Furthermore, the telescopic assembly comprises a second electric telescopic rod arranged on the sleeve, a rack plate is fixed at the movable end of the second electric telescopic rod, and the rack plate is meshed with a gear fixed on the disc.

Furthermore, locking mechanism including insert put in the adjustable shelf inboard and with protruding complex movable rod, the movable rod through reset assembly with the adjustable shelf is connected, just the one end of movable rod is fixed with first wedge, first wedge and slidable mounting be in second wedge butt in the adjustable shelf, be fixed with on the second wedge and set up the fixture block of the draw-in groove adaptation on the sleeve pipe inner wall.

Furthermore, the elastic component comprises a connecting rod fixed on the sleeve, and the connecting rod penetrates through the bearing plate and is in sliding fit with the bearing plate;

still including fixing guide bar and cover on the board are accepted and the cover is established on the guide bar and with connecting rod fixed connection's uide bushing, the cover is equipped with first spring on the guide bar, the both ends of first spring respectively with accept the board and the uide bushing butt.

The invention also provides a use method of the guiding needle inserting device of the pleural disease biopsy needle, which comprises the following steps:

s1, fixing the corresponding position of the support frame according to the body shape of the patient, and then controlling the first electric telescopic rod to be matched with the clamping jaw to clamp and fix the biopsy needle;

s2, starting a driving mechanism to control the whole vertical movement on the connecting frame and the bearing plate, when the cutting knife penetrates into the skin of a patient, the sleeve is contacted with the triggering mechanism, the driving mechanism stops working, and the second electric telescopic rod drives the cutting knife to rotate through the rack plate and the gear to perform incision treatment on the skin of the patient;

s3, after the notch is finished, the protrusion presses against the movable rod to enable the first wedge block to move, and the second electric telescopic rod is continuously shortened to drive the movable frame to move, so that the horizontal position of the cutting knife is changed;

and S4, the driving mechanism continues to work to drive the bearing plate and the biopsy needle to move continuously to be inserted into the examined part of the patient, so that the guidance is finished.

The invention has the beneficial effects that: the connecting frame and the bearing part are driven by the arranged driving mechanism to vertically move towards a patient and drive the biopsy needle and the cutting assembly to move, when the cutting assembly is penetrated into the skin of the patient, the telescopic assembly is connected with the triggering mechanism to realize the self-starting of the telescopic assembly, the cutting assembly is driven to cut the skin when the telescopic assembly moves, the cutting assembly can horizontally move after the cutting is finished, and the cutting assembly is prevented from interfering with the movement of the biopsy needle;

can realize the automatic guide of biopsy needle, can realize passing through cutting assembly automatic cutout skin department to puncture department skin simultaneously, need not the manual cutting of medical personnel, and can ensure that the biopsy needle is followed the accurate piercing of skin cutting department, and the security is high, can prevent effectively that the biopsy needle from taking place the potential safety hazard that the skew brought at the puncture in-process, and the practicality is strong.

Drawings

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

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a sectional view showing a connection state of the sleeve and the movable frame according to an embodiment of the present invention.

Fig. 3 is a perspective view illustrating a connection state of the sleeve and the movable frame according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a clamping mechanism according to an embodiment of the present invention.

Fig. 5 is an enlarged view of a structure at a in fig. 2.

Fig. 6 is a schematic structural diagram of another embodiment of the present invention.

Fig. 7 is a schematic view illustrating a connection state between the support frame and the connection frame according to an embodiment of the present invention.

Fig. 8 is a perspective view of a connecting frame according to an embodiment of the present invention.

Reference numerals:

1-supporting frame, 2-mounting frame, 3-limiting block, 4-control switch, 5-threaded rod, 6-threaded sleeve, 7-motor, 8-connecting frame, 9-connecting rod, 10-bearing piece, 11-first electric telescopic rod, 12-adjusting rod, 13-clamping jaw, 14-biopsy needle, 15-first spring, 16-guide sleeve, 17-guide rod, 18-sleeve, 19-second electric telescopic rod, 20-rack plate, 21-movable frame, 22-cutting knife, 23-disc, 24-bulge, 25-gear, 26-limiting plate, 27-movable rod, 28-second spring, 29-extension piece, 30-first wedge block, 31-second wedge block, 32-fixture block, 33-fixture groove, 34-third electric telescopic rod and 35-through groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In order to effectively explain embodiments of the present invention, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Example one

Referring to fig. 1, 7 and 8, a guiding needle inserting device for a pleural disease biopsy needle, which is used for guiding a biopsy needle 14, includes a support frame 1 and a connecting frame 8 slidably mounted on the support frame 1, wherein the connecting frame 8 is driven by a driving mechanism mounted on the support frame 1 to move vertically;

a bearing part 10 is fixed on the connecting frame 8 along the horizontal direction, and a clamping mechanism for fixing the biopsy needle 14 is fixedly arranged on the bearing part 10;

be located biopsy needle 14's vertical position department is provided with cutting assembly, cutting assembly install with on the mounting bracket that acceptor 10 passes through elastic component and connects, just be provided with on the mounting bracket and be used for the drive the flexible subassembly of cutting assembly motion, flexible subassembly by installing trigger mechanism control motion on the support frame 1 works as acceptor 10 vertical migration is followed to the mounting bracket, and with during the trigger mechanism contact, flexible subassembly drive cutting assembly motion, and can drive cutting assembly and carry out the level and dodge.

Drive mechanism drive link 8 and the accepting 10 through setting up move towards the patient perpendicularly, and drive biopsy needle 14 and cutting assembly and remove, when cutting assembly pierces patient's skin, flexible subassembly and trigger mechanism are connected the self-starting that realizes flexible subassembly, drive cutting assembly during the flexible subassembly motion and cut skin to can realize cutting assembly horizontal migration after the cutting is accomplished, prevent that cutting assembly from causing the interference to the removal of biopsy needle 14.

The invention has novel design, can realize automatic guide of the biopsy needle 14, can realize automatic cutting of the skin at the puncture position through the cutting assembly, does not need manual cutting of medical personnel, can ensure that the biopsy needle 14 is accurately punctured along the skin cutting position, has high safety, can effectively prevent potential safety hazards caused by the deviation of the biopsy needle 14 in the puncture process, and has strong practicability.

It should be noted that the support frame 1 is provided with a through groove 35 for the connecting frame 8 to penetrate through, the connecting frame 8 is in sliding fit with the through groove 25, and the through groove 25 plays a certain guiding role in sliding the connecting frame 8, so that the connecting frame 8 can be effectively prevented from shifting in the moving process.

Example two

Referring to fig. 1, the driving mechanism includes a threaded rod 5 rotatably mounted on the supporting frame 1 and a threaded sleeve 6 connected to the threaded rod 5 in a threaded manner and fixedly connected to the connecting frame 8, and one end of the threaded rod 5 is also fixedly connected to an output shaft of a motor 7 mounted on the supporting frame 1.

The motor 7 during operation drive threaded rod 5 that sets up rotates, and the sliding action that cooperates link 8 and support frame 1 when threaded rod 5 rotates realizes the axial displacement of threaded sleeve 6 along threaded rod 5, in order to drive link 8 and the moving as a whole of being connected with link 8 when threaded sleeve 6 removes to realize the drive demand.

It should be noted that the motor 7 is a forward and reverse rotation motor, a 4IK/80 yyyjt motor is adopted, the motor has stable performance, and other motors can be adopted as long as the driving requirements are met, which is not specifically limited in the present application.

EXAMPLE III

Referring to fig. 6, the driving mechanism includes a third electric telescopic rod 34 installed on the supporting frame 1, and a movable end of the third electric telescopic rod 34 is fixedly connected to the connecting frame 8.

In the embodiment of the present invention, the vertical driving of the connecting frame 8 is realized by using the telescopic action of the third electric telescopic rod 34, which is the same as the driving action of the motor 7 in the above embodiment, and is only different from the structure used, so that the details are not repeated herein.

Example four

Referring to fig. 1 and 4, the clamping mechanism includes a first electric telescopic rod 11 horizontally disposed and fixedly connected to the receiving member 10, and two oppositely disposed clamping jaws 13 hinged to a movable end of the first electric telescopic rod 11, and an outer arc of the clamping jaw 13 is further hinged to a fixed end of the first electric telescopic rod 11 through an adjusting rod 12 hinged to the clamping jaw.

The opening and closing control of the two clamping jaws 13 is realized by matching the adjusting rod 12 during the telescopic motion of the arranged first electric telescopic rod 11, so that the biopsy needle 14 is conveniently clamped and fixed.

It should be noted that rubber pads are fixed at the inner arcs of the two clamping jaws 13, and the rubber pads can effectively increase the stability of the biopsy needle 14 after being clamped, and do not damage the biopsy needle 14.

EXAMPLE five

Referring to fig. 1, the mounting bracket includes a sleeve 18 horizontally disposed, and a movable bracket 21 having one end inserted into the sleeve 18 and slidably limited with the sleeve 18 by a locking mechanism, and the cutting assembly is rotatably mounted on the movable bracket 21 and connected to a telescopic assembly mounted on the sleeve 18.

In the embodiment of the present invention, the locking mechanism is provided to fix the position of the movable frame 21 relative to the sleeve 18, so that when the cutting assembly performs cutting, no position deviation occurs, so as to ensure the stability of cutting, and when the locking mechanism reaches the unlocked state, the movable frame 21 can move relative to the sleeve 18, so that the horizontal position of the cutting assembly is changed, and it is ensured that the cutting assembly does not interfere with the movement of the biopsy needle 14.

EXAMPLE six

Referring to fig. 1, 2 and 3, the cutting assembly includes a disc 23 rotatably mounted on the movable frame 21 and a cutting knife 22 fixed on the disc 23, a protrusion 24 is disposed on one side of the disc 23 away from the cutting knife 22, the disc 23 is connected to the telescopic assembly and can rotate under the action of the telescopic assembly, when the protrusion 24 rotates along with the disc 23 and contacts with the locking mechanism, the locking mechanism reaches an unlocked state, and at this time, the movable frame 21 can slide along the sleeve 18;

the movable frame 21 is further provided with a limiting plate 26, and the limiting plate 26 is used for limiting the rotation angle of the cutting knife 22.

It should be noted that, cutting knife 22 is in the inclined placement state under initial condition, after the cutting knife 22 pierces the skin, sleeve 18 and trigger mechanism contact, flexible subassembly begins to move this moment, because locking mechanism's existence, flexible subassembly movement time limit drives disc 23 and rotates, drive cutting knife 22 when disc 23 rotates and rotate, in order to realize the skin cutting, and when cutting knife 22 moved to with limiting plate 26 butt, cutting knife 22 no longer takes place to rotate, and at this moment, protruding 24 and locking mechanism contact, make locking mechanism reach the unblock state, flexible subassembly continuous motion, thereby drive the relative sleeve 18 of adjustable shelf 21 and remove, make cutting knife 22 carry out the horizontal position transform, after realizing the skin cutting, cutting knife 22 removes, prevented that cutting knife 22 and adjustable shelf 21 from causing the interference to the removal of biopsy needle 14.

EXAMPLE seven

Referring to fig. 1, the telescopic assembly comprises a second electric telescopic rod 19 mounted on the sleeve 18, a rack plate 20 is fixed at the movable end of the second electric telescopic rod 19, and the rack plate 20 is engaged with a gear 25 fixed on the disc 23.

In the embodiment of the present invention, when the second electric telescopic rod 19 drives the rack plate 20 to move, the gear 25 is driven to rotate, and the gear 25 drives the disc 23 to rotate, so as to drive the cutting knife 22 to rotate, thereby realizing cutting.

It should be noted that the second electric telescopic rod 19 is in communication with the triggering mechanism, the triggering mechanism comprises a limiting block 3 fixed on the support frame 1, a control switch 4 is installed on the limiting block 3, and when the sleeve 18 is in contact with the control switch 4, the control switch 4 controls the second electric telescopic rod 19 to work.

Example eight

Referring to fig. 2 and 5, the locking mechanism includes a movable rod 27 inserted into the inner side of the movable frame 21 and engaged with the protrusion 24, the movable rod 27 is connected to the movable frame 21 through a reset component, a first wedge block 30 is fixed at one end of the movable rod 27, the first wedge block 30 abuts against a second wedge block 31 slidably mounted in the movable frame 21, and a locking block 32 adapted to a locking groove 33 disposed on the inner wall of the sleeve 18 is fixed on the second wedge block 31.

In an initial state, due to the action of the resetting component, the first wedge-shaped block 30 on the movable rod 27 exerts force on the second wedge-shaped block 31, the clamping block 32 is clamped in the clamping groove 33, so that the movable frame 21 is fixed in position relative to the sleeve 18, when the movable rod 27 moves under the action of the protrusion 24, the first wedge-shaped block 30 loses force action on the second wedge-shaped block 31, the clamping block 32 is separated from the clamping groove 33 at the moment, and the movable frame 21 is in a free state relative to the sleeve 18.

It should be noted that the locking groove 33 is a hemispherical embedded groove, and the locking block 32 is arranged in a hemispherical structure, so that when the second wedge-shaped block 31 loses the pressure, the locking block 32 is conveniently separated from the locking groove 33.

In the embodiment of the present invention, it should be further noted that the reset assembly includes a second spring 28 embedded inside the movable frame 21, and one end of the second spring 28 abuts against an extending member 29 fixed to the movable rod 27.

Example nine

Referring to fig. 1, the elastic component includes a connecting rod 9 fixed on the sleeve 18, and the connecting rod 9 penetrates through the bearing plate 10 and is in sliding fit with the bearing plate 10;

still including fixing guide bar 17 and the cover on accepting board 10 are established guide bar 17 go up and with connecting rod 9 fixed connection's uide bushing 16, the cover is equipped with first spring 15 on the guide bar 17, the both ends of first spring 15 respectively with accept board 10 and uide bushing 16 butt.

In the embodiment of the invention, the connecting rod 9 is arranged to realize that the sleeve 18 vertically moves relative to the bearing plate 10, and meanwhile, the guide rod 17 and the guide sleeve 16 are arranged to cooperate with the first spring 15 to realize that the sleeve 18 has certain pressure relative to the limiting block 3 after the sleeve 18 abuts against the limiting block 3, so that the smooth operation of the cutting knife 22 is ensured.

Example ten

A method of using a guided needle insertion device for a pleural disease biopsy needle, comprising the steps of:

s1, fixing the corresponding position of the support frame 1 according to the body shape of the patient, and then controlling the first electric telescopic rod 11 to be matched with the clamping jaw 13 to clamp and fix the biopsy needle 14;

s2, starting a driving mechanism to control the integral vertical movement of the connecting frame 8 and the bearing plate 10, when the cutting knife 22 pierces the skin of the patient, the sleeve 18 contacts with the trigger mechanism, the driving mechanism stops working, the second electric telescopic rod 19 drives the cutting knife 22 to rotate through the rack plate 20 and the gear 25, and the skin of the patient is subjected to incision treatment;

s3, after the incision is finished, the protrusion 24 presses against the movable rod 27, so that the first wedge-shaped block 30 moves, and the second electric telescopic rod 19 is continuously shortened to drive the movable frame 21 to move, so that the horizontal position of the cutting knife 22 is changed;

and S4, continuing to work by the driving mechanism to drive the bearing plate 10 and the biopsy needle 14 to move continuously to be inserted into the examined part of the patient, thereby completing the guidance.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A guiding needle-inserting device of a pleural disease biopsy needle is used for guiding a biopsy needle (14), and is characterized by comprising a support frame (1) and a connecting frame (8) which is slidably mounted on the support frame (1), wherein the connecting frame (8) is driven by a driving mechanism mounted on the support frame (1) to move vertically;

a bearing part (10) is fixed on the connecting frame (8) along the horizontal direction, and a clamping mechanism for fixing the biopsy needle (14) is fixedly arranged on the bearing part (10);

be located the vertical position department of biopsy needle (14) is provided with cutting assembly, cutting assembly install with on the mounting bracket that acceptor (10) pass through elastic component and connect, just be provided with on the mounting bracket and be used for the drive the flexible subassembly of cutting assembly motion, flexible subassembly by installing trigger mechanism control motion on support frame (1) works as acceptor (10) vertical migration is followed to the mounting bracket, and with during the trigger mechanism contact, flexible subassembly drive cutting assembly motion, and can drive cutting assembly and carry out the level and dodge.

2. The pleural disease biopsy needle guiding needle feeding device of claim 1, wherein the driving mechanism comprises a threaded rod (5) rotatably installed on the support frame (1) and a threaded sleeve (6) which is screwed on the threaded rod (5) and is fixedly connected with the connecting frame (8), and one end of the threaded rod (5) is also fixedly connected with an output shaft of a motor (7) installed on the support frame (1).

3. The pleural disease biopsy needle guiding needle inserting device according to claim 1, characterized in that the driving mechanism comprises a third electric telescopic rod (34) installed on the support frame (1), and the movable end of the third electric telescopic rod (34) is fixedly connected with the connecting frame (8).

4. The needle guiding and feeding device of the pleural disease biopsy needle as claimed in claim 1, wherein the clamping mechanism comprises a first electric telescopic rod (11) which is horizontally placed and fixedly connected with the receiving member (10) and two oppositely arranged clamping jaws (13) which are hinged at the movable end of the first electric telescopic rod (11), and the outer arc of the clamping jaw (13) is further hinged with the fixed end of the first electric telescopic rod (11) through an adjusting rod (12) which is hinged with the clamping jaw.

5. The pleural disease biopsy needle guiding needle inserting device according to claim 1, wherein the mounting frame comprises a horizontally arranged sleeve (18) and a movable frame (21) with one end inserted into the sleeve (18) and slidably limited with the sleeve (18) through a locking mechanism, and the cutting assembly is rotatably mounted on the movable frame (21) and connected with a telescopic assembly mounted on the sleeve (18).

6. The pleural disease biopsy needle guiding needle inserting device according to claim 5, characterized in that the cutting assembly comprises a disc (23) rotatably mounted on the movable frame (21) and a cutting knife (22) fixed on the disc (23), a protrusion (24) is arranged on one side of the disc (23) far away from the cutting knife (22), the disc (23) is connected with a telescopic assembly and can rotate under the action of the telescopic assembly, when the protrusion (24) rotates along with the disc (23) and contacts with a locking mechanism, the locking mechanism reaches an unlocking state, and at the moment, the movable frame (21) can slide along the sleeve (18);

the movable frame (21) is further provided with a limiting plate (26), and the limiting plate (26) is used for limiting the rotation angle of the cutting knife (22).

7. The pleural disease biopsy needle guiding needle feeding device of claim 6, wherein the telescoping assembly comprises a second electric telescoping rod (19) mounted on the sleeve (18), a rack plate (20) is fixed to a movable end of the second electric telescoping rod (19), and the rack plate (20) is engaged with a gear (25) fixed to the disc (23).

8. The pleural disease biopsy needle guiding needle inserting device according to claim 6, wherein the locking mechanism comprises a movable rod (27) inserted inside the movable frame (21) and matched with the protrusion (24), the movable rod (27) is connected with the movable frame (21) through a resetting component, a first wedge block (30) is fixed at one end of the movable rod (27), the first wedge block (30) abuts against a second wedge block (31) slidably installed in the movable frame (21), and a clamping block (32) matched with a clamping groove (33) formed in the inner wall of the sleeve (18) is fixed on the second wedge block (31).

9. The pleural disease biopsy needle guiding needle feeding device of claim 5, wherein the elastic component comprises a connecting rod (9) fixed on the sleeve (18), and the connecting rod (9) penetrates the bearing plate (10) and is in sliding fit with the bearing plate (10);

still including fixing guide bar (17) and the cover on accepting board (10) are established guide bar (17) go up and with connecting rod (9) fixed connection's uide bushing (16), the cover is equipped with first spring (15) on guide bar (17), the both ends of first spring (15) respectively with accept board (10) and uide bushing (16) butt.

10. A method of using the pleural disease biopsy needle guidance needle device of any of claims 1-9, comprising the steps of:

s1, fixing the corresponding position of the support frame (1) according to the body type of the patient, and then controlling a first electric telescopic rod (11) to be matched with a clamping jaw (13) to clamp and fix a biopsy needle (14);

s2, starting a driving mechanism to control the connecting frame (8) and the bearing plate (10) to integrally and vertically move, when the cutting knife (22) pierces the skin of a patient, the sleeve (18) is in contact with the trigger mechanism, the driving mechanism stops working, the second electric telescopic rod (19) works to drive the cutting knife (22) to rotate through the rack plate (20) and the gear (25), and the skin of the patient is subjected to incision treatment;

s3, after the cut is finished, the protrusion (24) presses the movable rod (27) to enable the first wedge-shaped block (30) to move, the second electric telescopic rod (19) is continuously shortened to drive the movable frame (21) to move, and therefore the horizontal position of the cutting knife (22) is changed;

s4, the driving mechanism continues to work to drive the bearing plate (10) and the biopsy needle (14) to move continuously to be inserted into the examined part of the patient, and therefore guiding is completed.

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