CN107440769B

CN107440769B - Puncture device for thoracic surgery

Info

Publication number: CN107440769B
Application number: CN201710869019.3A
Authority: CN
Inventors: 金冰
Original assignee: Nanyang City Center Hospital
Current assignee: Nanyang City Center Hospital
Priority date: 2017-09-22
Filing date: 2017-09-22
Publication date: 2020-10-20
Anticipated expiration: 2037-09-22
Also published as: CN107440769A

Abstract

The invention discloses a puncture device for thoracic surgery, which comprises a needle body, an injection hole arranged in the needle body and a liquid extraction cavity arranged in the needle body, wherein a liquid extraction pipe is arranged in the liquid extraction cavity, a fixing plate is arranged on the needle body, a liquid extraction connector connected with the liquid extraction pipe is arranged on the fixing plate, an injection mechanism is arranged on the needle body, the injection mechanism comprises an injector connected with the needle body, a liquid extraction injector is arranged on the injector, and the liquid extraction injector is connected with the liquid extraction connector. The device can puncture once to extract liquid, can inject medicine, can be operated by one person, and has good injection and liquid extraction effects.

Description

Puncture device for thoracic surgery

Technical Field

The invention relates to the technical field of thoracic cavity related medical puncture instruments, in particular to a puncture device for thoracic surgery.

Background

The thoracentesis aims at definitely diagnosing and relieving the pressure of internal organs, and the main operation steps are as follows: (1) inserting a needle at the selected puncture point for local anesthesia; (2) checking whether the puncture needle is smooth to prepare for puncture; (3) the operator punctures at the puncture point, slowly inserts the needle during puncture, tries to withdraw when the needle is inserted to the depth shown by the B ultrasonic positioning, if liquid is extracted, continues to insert the needle properly, if liquid is extracted, stops continuing to insert the needle, and sucks liquid in the thoracic cavity with the assistance of an assistant to complete puncture; (4) when the medicine needs to be injected into the thoracic cavity after the puncture is finished, the puncture needle needs to be pulled out and the medicine is injected by the injector; (5) after the above steps are completed, covering a sterile gauze at the puncture position, and fixing the sterile gauze by using an adhesive tape; (6) the extracted chest fluids are respectively sent for examination according to the disease condition.

The existing puncture needle is difficult to accurately control the puncture depth, and a syringe is often required to be inserted and pumped back for multiple times until liquid is pumped out, so that at least two persons are often required to operate the puncture needle. In addition, when the fluid in the pleural cavity is pumped less and less, the visceral pleura is closer to the parietal pleura, and the position of the puncture needle tip needs to be changed when an operator tries to pump the fluid as much as possible, so that the visceral pleura and the visceral organs are more easily damaged. If the amount of accumulated liquid in the chest cavity of a patient is small, the puncture point is slightly lower or the puncture part is close to important visceral organs or blood vessels, so that injury is more easily caused.

Disclosure of Invention

The invention aims to provide a puncture device for thoracic surgery, which can puncture and extract liquid at one time and can inject medicine, can be operated by one person and has good injection and extraction effects.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a piercing depth for thoracic surgery, includes the needle body, sets up at the internal injection hole of needle and sets up at the internal liquid extraction chamber of needle, liquid extraction intracavity is equipped with the drawing tube, be equipped with the fixed plate on the needle body, be equipped with on the fixed plate and be connected the drawing liquid connector with the drawing tube, set up injection mechanism on the needle body, injection mechanism includes the syringe of being connected with the needle body, be equipped with the drawing liquid syringe on the syringe, the drawing liquid syringe is connected with the drawing liquid connector, piercing depth for thoracic surgery includes the fixed adjustment mechanism of syringe.

Furthermore, the fixed adjustment mechanism of syringe includes the syringe clamp body and the gooseneck of being connected with the syringe clamp body, the gooseneck sets up G word clamp.

Furthermore, the injector clamp body is connected with the gooseneck through a universal connector.

Furthermore, the piston of the liquid extraction syringe is connected with a rubber soft pull rod, the liquid extraction syringe is provided with a support, the support is provided with a wire wheel, and the rubber soft pull rod is sleeved on the wire wheel and is connected with a piston rod of the syringe.

Furthermore, the longitudinal section of the upper groove of the wire wheel is rectangular, and the longitudinal section of the rubber soft pull rod is of a rectangular structure.

Furthermore, a pawl is arranged at the tail of the inner cavity of the injector, and teeth matched with the pawl are arranged on the rubber soft pull rod.

Furthermore, the inner cavity of the liquid-extracting injector is provided with a rubber soft pull rod guiding and righting mechanism.

Furthermore, the rubber soft pull rod guiding and centering mechanism comprises a gear which is arranged in the inner cavity of the liquid extracting injector through a support rod and is meshed with the rubber soft pull rod.

Furthermore, a righting clamping sleeve matched with the rubber soft pull rod is arranged in the inner cavity of the liquid extracting injector.

Furthermore, the inner surface of the wire wheel is provided with inner teeth.

Furthermore, be equipped with crooked adjustment mechanism on the liquid suction pipe, crooked adjustment mechanism is including setting up the elasticity gusset on the liquid suction pipe, be equipped with on the needle body and supply the gliding fixed pulley of the first stay cord of stay cord and second stay cord, be equipped with the stay cord of adjusting the liquid suction pipe bending on the elasticity gusset, be equipped with first stay cord and second stay cord on the elasticity gusset, be equipped with the reel on the fixed plate, the last serving tensile strength of reel is greater than the tensile strength of first stay cord, and first stay cord and second stay cord all are connected with the reel, the length of second stay cord is greater than the length of first stay cord.

Furthermore, the second pull rope is fixed at the lower part of the first pull rope on the elastic rib plate.

Furthermore, a pull rope winding roll is arranged on the fixing plate, and the free end of the pull rope is fixed on the pull rope winding roll.

Furthermore, a manual shifting wheel is connected to a shaft of the winding wheel, a winding wheel gear is arranged on the shaft of the winding wheel, and a pawl matched with the winding wheel gear is arranged on the fixing plate.

Furthermore, a driving wheel is connected to a shaft of the rope winding roll, a driving wheel gear is arranged on the shaft of the rope winding roll, and a pawl matched with the driving wheel gear is arranged on the fixing plate.

Furthermore, a liquid suction pipe rotating mechanism for driving the elastic rib plate to rotate is arranged on the fixing plate.

Further, liquid suction pipe rotary mechanism is including setting up the drive gear on the fixed plate, and the fixed plate passes through the bearing rotation connection of suit on the connector with the drawing liquid connector, be equipped with complex clamping jaw with it on the drive gear, the cover is equipped with the fluted disc on the drawing liquid connector, fluted disc and drive gear meshing, be connected with the drawing liquid syringe through sealed bearing in the connector.

Further, a rubber sealing layer is arranged on the inner side of the sealing bearing.

Furthermore, a miniature camera is arranged at the end part of the elastic rib plate.

Furthermore, the miniature camera can adopt an infrared camera, and a flash lamp is arranged in the camera.

Furthermore, the rubber soft pull rod is sleeved on the wire wheel and is clamped with a piston rod of the injector.

When the device is used, medicine is pumped into the injector, the piston of the injector is continuously pulled to the tail end of the injector, the needle head of the needle body is downward, liquid medicine is positioned at the lower end of the injector, the injector is shaken to enable medicine bubbles to move upward, the piston rod of the injector is pushed downward, gas in the needle body is discharged, the needle body is inserted into the pleural cavity, the medicine is injected into a lesion part, the needle body is moved to a hydrops part after the injection is finished, the rubber soft pull rod is clamped on the piston rod of the injector to push the piston rod, the piston rod drives the rubber soft pull rod to pump the hydrops into the liquid-pumping injector, importantly, the device can quickly pump the hydrops into the liquid-pumping injector, simultaneously, the injector pushes air in the pleural cavity, negative pressure in the pleural cavity is consistent all the time, chest distress and the like can not be caused, more harm can not be brought to patients, and more importantly, the visceral pleura pleural, need not the position of adjustment needle body syringe needle, greatly reduced causes the injury to visceral pleura, internal organs, and is further, when using, can stimulate the stay cord and stretch bending liquid suction pipe and elastic rib plate, like this at the extraction liquid body, the gas that the syringe got into the thorax can not the hydrops contact, can not produce the bubble, does not influence the drawing liquid.

Drawings

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of embodiment 2 of the present invention;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a side view of the fixing plate of the present invention;

FIG. 5 is a schematic view of the connection structure of the syringe piston rod with the rubber soft pull rod after being pushed;

FIG. 6 is a schematic structural view of a guiding and centering mechanism of a soft rubber pull rod of the present invention;

FIG. 7 is a schematic view of the bend adjustment mechanism of the present invention;

FIG. 8 is a schematic structural view of a centering sleeve of the present invention;

fig. 9 is a side view of the needle body of the present invention;

fig. 10 is a schematic view of the needle body of the present invention in an operational state;

fig. 11 is a schematic view of the syringe holding adjustment mechanism of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 11 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.

The first embodiment is as follows: the utility model provides a piercing depth for thoracic surgery, includes needle body 2, sets up at the internal injection hole 3 of needle and sets up at the internal liquid extraction chamber 4 of needle, liquid extraction intracavity is equipped with liquid suction pipe 18, be equipped with fixed plate 1 on the needle body, be equipped with on the fixed plate 1 and connect drawing liquid connector 10 with liquid suction pipe, set up injection mechanism on the needle body, injection mechanism includes the syringe 14 of being connected with the needle body, be equipped with drawing liquid syringe 15 on the syringe, drawing liquid syringe is connected with the drawing liquid connector, piercing depth for thoracic surgery includes the fixed adjustment mechanism of syringe.

Further, the injector fixing and adjusting mechanism comprises an injector clamp body 42 and a gooseneck 43 connected with the injector clamp body, and the gooseneck is provided with a G-shaped clamp 44. The syringe clip body may be a clip of the prior art.

Furthermore, a piston of the liquid extraction syringe is connected with a rubber soft pull rod 16, a support 38 is arranged on the liquid extraction syringe, a wire wheel 39 is arranged on the support, and the rubber soft pull rod is sleeved on the wire wheel and is connected with a piston rod 17 of the syringe. The piston rod is provided with a clamping block, the clamping block is provided with a clamping hole, and the rubber soft pull rod is sleeved on the clamping block and hinged through a pin shaft.

Furthermore, the tail part of the inner cavity of the injector is provided with a pawl 33, and the rubber soft pull rod is provided with teeth 34 matched with the pawl.

Further, the guiding and righting mechanism for the soft rubber pull rod comprises a gear 35 which is arranged in the inner cavity of the liquid extracting injector through a support rod 36 and is meshed with the soft rubber pull rod.

Furthermore, a righting clamping sleeve 37 matched with the rubber soft pull rod is arranged in the inner cavity of the liquid extracting injector.

When the device is used, medicine is pumped into the injector, the piston of the injector is continuously pulled to the tail end of the injector, the needle head of the needle body is downward, liquid medicine is positioned at the lower end of the injector, the injector is shaken to enable medicine bubbles to move upward, the piston rod of the injector is pushed downward, gas in the needle body is discharged, the needle body is inserted into the pleural cavity, the medicine is injected into a lesion part, the needle body is moved to a hydrops part after the injection is finished, the rubber soft pull rod is clamped on the piston rod of the injector to push the piston rod, the piston rod drives the rubber soft pull rod to pump the hydrops into the liquid-pumping injector, importantly, the device can quickly pump the hydrops into the liquid-pumping injector, simultaneously, the injector pushes air in the pleural cavity, negative pressure in the pleural cavity is consistent all the time, chest distress and the like can not be caused, more harm can not be brought to patients, and more importantly, the visceral pleura pleural, the position of the needle body and the needle head do not need to be adjusted, so that the injury to visceral pleura and internal organs is greatly reduced.

Example two: the utility model provides a piercing depth for thoracic surgery, includes needle body 2, sets up at the internal injection hole 3 of needle and sets up at the internal liquid extraction chamber 4 of needle, liquid extraction intracavity is equipped with liquid suction pipe 18, be equipped with fixed plate 1 on the needle body, be equipped with on the fixed plate 1 and be connected drawing liquid connector 10 with liquid suction pipe, set up injection mechanism on the needle body, injection mechanism includes syringe 14 of being connected with the needle body, be equipped with drawing liquid syringe 15 on the syringe, drawing liquid syringe is connected with the drawing liquid connector.

Furthermore, be equipped with crooked adjustment mechanism on the liquid suction pipe, crooked adjustment mechanism is including setting up elasticity gusset 19 on liquid suction pipe 18, be equipped with on the needle body and supply the gliding fixed pulley 5 of the first stay cord 21 of stay cord and second stay cord 22, be equipped with the stay cord 20 of adjusting the liquid suction pipe bending on the elasticity gusset, first stay cord and second stay cord are fixed on elasticity gusset, be equipped with take-up pulley 6 on the fixed plate, 23 tensile strength of serving as reasons on the take-up pulley are greater than the tensile strength of first stay cord, and first stay cord and second stay cord all are connected with the serving, the length of second stay cord is greater than the length of first stay cord.

Furthermore, the fixed pulley 5 can adopt a shaft, so that the cost is saved.

When the device is used, medicine is pumped into the injector, the piston of the injector is continuously pulled to the tail end of the injector, the needle head of the needle body is downward, liquid medicine is positioned at the lower end of the injector, the injector is shaken to enable medicine bubbles to move upward, the piston rod of the injector is pushed downward, gas in the needle body is discharged, the needle body is inserted into the pleural cavity, the medicine is injected into a lesion part, the needle body is moved to a hydrops part after the injection is finished, the rubber soft pull rod is clamped on the piston rod of the injector to push the piston rod, the piston rod drives the rubber soft pull rod to pump the hydrops into the liquid-pumping injector, importantly, the device can quickly pump the hydrops into the liquid-pumping injector, simultaneously, the injector pushes air in the pleural cavity, negative pressure in the pleural cavity is consistent all the time, chest distress and the like can not be caused, more harm can not be brought to patients, and more importantly, the visceral pleura pleural, the position of the needle body and the needle head of the needle body does not need to be adjusted, so that the injury to visceral pleura and internal organs is greatly reduced, and further, when the injection mechanism is used, the pull rope can be pulled to bend the liquid suction pipe and the elastic rib plate, so that when liquid is sucked, gas entering the pleural cavity of the injector cannot be subjected to hydrops contact, bubbles cannot be generated, the liquid suction is not influenced, and more importantly, the injection mechanism is of a disposable structure, so that cross infection is avoided.

Example three: the utility model provides a piercing depth for thoracic surgery, includes needle body 2, sets up at the internal injection hole 3 of needle and sets up at the internal liquid extraction chamber 4 of needle, liquid extraction intracavity is equipped with liquid suction pipe 18, be equipped with fixed plate 1 on the needle body, be equipped with on the fixed plate 1 and be connected drawing liquid connector 10 with liquid suction pipe, set up injection mechanism on the needle body, injection mechanism includes syringe 14 of being connected with the needle body, be equipped with drawing liquid syringe 15 on the syringe, drawing liquid syringe is connected with the drawing liquid connector.

Furthermore, the piston of the liquid extraction syringe is connected with a rubber soft pull rod 16, the rubber soft pull rod can only stretch the piston to move backwards, the piston cannot be pushed to move forwards, secondary use cannot be realized, and cross infection is avoided, the liquid extraction syringe is provided with a support 38, the support is provided with a wire wheel 39, and the rubber soft pull rod is sleeved on the wire wheel and is connected with a piston rod 17 of the syringe. The piston rod is provided with a clamping block, the clamping block is provided with a clamping hole, the rubber soft pull rod is sleeved on the clamping block and hinged through a pin shaft, the soft pull rod is conveniently clamped on the piston rod when the soft pull rod is used, and the piston rod is provided with the clamping blocks, so that different amounts of medicines can be extracted conveniently.

Furthermore, the longitudinal section of the groove on the wire wheel is rectangular, and the longitudinal section of the rubber soft pull rod is of a rectangular structure, so that the rubber soft pull rod is conveniently clamped in the groove.

Furthermore, the tail part of the inner cavity of the injector is provided with a pawl 33, and the rubber soft pull rod is provided with teeth 34 matched with the pawl. When liquid is pumped, the rubber soft pull rod is clamped on the piston rod of the injector, the piston rod drives the rubber soft pull rod to enter the cavity of the injector, and the pawl clamps teeth on the rubber soft pull rod to prevent the piston rod and the rubber soft pull rod from being withdrawn, so that the injector is prevented from being repeatedly used, and secondary use cross infection is avoided.

Further, the guiding and righting mechanism for the soft rubber pull rod comprises a gear 35 which is arranged in the inner cavity of the liquid extracting injector through a support rod 36 and is meshed with the soft rubber pull rod. The rubber soft pull rod is always positioned in the center of the cavity of the liquid pumping injector through the gear and the centering clamping sleeve, so that the piston of the liquid pumping injector is prevented from inclining, and liquid pumping is guaranteed to be completed smoothly and quickly.

Furthermore, the inner surface of the wire wheel is provided with inner teeth, and when the rubber soft pull rod is pulled, the teeth on the rubber soft pull rod are meshed with the inner teeth, so that the pulling operation is stable.

Furthermore, be equipped with crooked adjustment mechanism on the liquid suction pipe, crooked adjustment mechanism is including setting up elasticity gusset 19 on liquid suction pipe 18, be equipped with on the needle body and supply the gliding fixed pulley 5 of the first stay cord 21 of stay cord and second stay cord 22, be equipped with the stay cord 20 of adjusting the liquid suction pipe bending on the elasticity gusset, first stay cord and second stay cord are fixed on elasticity gusset, be equipped with take-up pulley 6 on the fixed plate, 23 tensile strength of serving as reasons on the take-up pulley are greater than the tensile strength of first stay cord, and first stay cord and second stay cord all are connected with the serving, the length of second stay cord is greater than the length of first stay cord. After medicine is sucked, the needle body is inserted into the thoracic cavity, the winding wheel is shifted to rotate at the moment, meanwhile, a pawl matched with the driving wheel gear is fixed, the pawl is not meshed with the driving wheel gear, the elastic rib plate is convenient to stretch, the distance between the connecting position of the second pull rope and the elastic rib plate and the liquid drawing connector is shorter than the distance between the connecting position of the first pull rope and the elastic rib plate and the liquid drawing connector, the manual shifting wheel is rotated, the winding wheel winds the winding rope on the reel to pull the first pull rope, the first pull rope pulls the elastic rib plate outwards, when the connecting position of the first pull rope of the elastic rib and the elastic rib plate is pulled to the fixed pulley position, one side of the liquid drawing cavity is provided with a hole 45, the pull rope, the first pull rope and the second pull rope are all positioned in the hole, the first pull rope is continuously pulled (at the moment, the length of the second pull rope is larger than that of the first pull rope, first stay cord is broken, continue to rotate the reel, the second stay cord atress this moment, pull out the length that needs with the elasticity gusset, loosen the pawl with drive wheel gear matched with this moment, make pawl and drive wheel gear engagement, it rolls up the stay cord on the reel to rotate the drive wheel, thereby adjust the crookedness of elasticity gusset, simultaneously through the rotatory elasticity gusset of liquid suction pipe rotary mechanism, the needle body can be pricked at the injection position, the liquid suction pipe is in hydrops department simultaneously, promote the syringe piston rod, treat the injection back, take out the needle body and continue to promote the syringe piston rod until having taken out the hydrops.

Furthermore, the second pull rope is fixed at the lower part of the first pull rope on the elastic rib plate, so that the length of the elastic rib plate pulled out of the needle body by the second pull rope is longer.

Furthermore, a manual dial wheel 8 is connected to a shaft of the winding wheel 6, a winding wheel gear 7 is arranged on a shaft 31 of the winding wheel, and a pawl 24 matched with the winding wheel gear is arranged on the fixing plate. The manual adjustment is more accurate.

Furthermore, a driving wheel 27 is connected to the shaft of the rope winding roll 25, a driving wheel gear 26 is arranged on the shaft of the rope winding roll, and a pawl 24 matched with the driving wheel gear is arranged on the fixing plate.

Further, liquid suction pipe rotary mechanism is including setting up drive gear 9 on the fixed plate, and fixed plate and drawing liquid connector 10 rotate through the bearing 12 of suit on the connector to be connected, be equipped with the complex clamping jaw with it on the drive gear, the cover is equipped with fluted disc 13 on the drawing liquid connector, fluted disc and drive gear meshing, be connected with the drawing liquid syringe through sealed bearing 11 in the connector. The rotation driving gear drives the fluted disc to rotate, the fluted disc rotates to drive the liquid pumping connector to rotate, and the liquid pumping connector drives the elastic rib plate to rotate, so that the liquid pumping hose is in a required bending degree.

Furthermore, a miniature camera 40 is arranged at the end part of the elastic rib plate 19.

Furthermore, the miniature camera can adopt an infrared camera, and a flash lamp 41 is arranged in the camera, so that effusion in the thoracic cavity can be observed conveniently.

Furthermore, the cover is equipped with the rubber sleeve on the elasticity gusset, and the rubber sleeve passes through the bolt and presses on the fixed plate, stretches out the length of needle body when the liquid suction pipe and satisfies the needs after, presses the rubber sleeve on the fixed plate through the bolt, can not pull out the liquid suction pipe when the crookedness of liquid suction pipe is adjusted through the stay cord.

One side of the injector port is provided with a righting block.

The fourth embodiment is different from the third embodiment in that when the injector is inverted at an injection position, a piston rod of the injector is in threaded connection with a piston, a protrusion is arranged on the contact surface of the injector and the piston, the piston is prevented from rotating when the piston rod is removed, a threaded hole in the piston corresponds to a hole in a needle body, after injection is completed, the piston rod is screwed into a new piston, a rubber soft pull rod is clamped on the piston rod, and the piston rod is pushed again to press air into the thoracic cavity.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A thoracic surgical puncture device, characterized in that: the injection needle comprises a needle body, an injection hole arranged in the needle body and a liquid extraction cavity arranged in the needle body, wherein a liquid extraction pipe is arranged in the liquid extraction cavity, a fixing plate is arranged on the needle body, a liquid extraction connector connected with the liquid extraction pipe is arranged on the fixing plate, and an injection mechanism is arranged on the needle body;

the injection mechanism comprises an injector connected with the needle body, a liquid extraction injector is arranged on the injector, and the liquid extraction injector is connected with a liquid extraction connector; the piston of the liquid extraction injector is connected with a rubber soft pull rod, the liquid extraction injector is provided with a support, the support is provided with a wire wheel, and the rubber soft pull rod is sleeved on the wire wheel and is connected with a piston rod of the injector;

the wire drawing device is characterized in that the longitudinal section of the groove on the wire wheel is rectangular, a bending adjusting mechanism is arranged on the liquid drawing pipe, the bending adjusting mechanism comprises an elastic rib plate arranged on the liquid drawing pipe, a fixed pulley for sliding the pull rope, a first pull rope and a second pull rope is arranged on the needle body, the pull rope for adjusting the bending of the liquid drawing pipe is arranged on the elastic rib plate, the first pull rope and the second pull rope are arranged on the elastic rib plate, a winding wheel is arranged on the fixed plate, the tensile strength of the winding rope on the winding wheel is greater than that of the first pull rope, the first pull rope and the second pull rope are both connected with the winding rope, and the length of the second pull rope is greater than that of.

2. The thoracic surgical puncture device of claim 1, wherein: the longitudinal section of the rubber soft pull rod is of a rectangular structure.

3. The thoracic surgical puncture device of claim 2, wherein: the tail of the inner cavity of the injector is provided with a pawl.

4. The thoracic surgical puncture device of claim 3, wherein: and the rubber soft pull rod is provided with teeth matched with the pawl.

5. The thoracic surgical puncture device of claim 4, wherein: the inner cavity of the liquid-extracting injector is provided with a rubber soft pull rod guiding and righting mechanism.

6. The thoracic surgical punch of claim 5, wherein: the rubber soft pull rod guiding and righting mechanism comprises a gear which is arranged in the inner cavity of the liquid extracting injector through a supporting rod and is meshed with the rubber soft pull rod.

7. The thoracic surgical puncture device of claim 6, wherein: a righting clamping sleeve matched with the rubber soft pull rod is arranged in the inner cavity of the liquid extracting injector.