CN216495408U - Biopsy operation device with stepless adjustable sampling window size - Google Patents
Biopsy operation device with stepless adjustable sampling window size Download PDFInfo
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- CN216495408U CN216495408U CN202122813154.0U CN202122813154U CN216495408U CN 216495408 U CN216495408 U CN 216495408U CN 202122813154 U CN202122813154 U CN 202122813154U CN 216495408 U CN216495408 U CN 216495408U
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Abstract
The utility model provides a biopsy surgical device with a steplessly adjustable sampling window, which comprises a handle and a cutter assembly, wherein the cutter assembly comprises an outer cutter tube and an inner cutter tube; the handle is internally provided with a first motor, the first motor is connected with the inner cutter tube through a transmission mechanism and is used for driving the inner cutter tube to axially move, so that the front end of the inner cutter tube stops at any axial position of the sampling window of the outer cutter tube; the output part of the transmission mechanism is matched with the inner cutter tube through a thread pair, and the axial position of the inner cutter tube relative to the outer cutter tube is continuously adjusted through the thread pair, so that the actual windowing size of the sampling window is subjected to stepless adjustment. The inner cutter tube can be continuously adjusted between the state that the sampling window is completely closed and the state that the sampling window is completely opened, and the window size of the sampling window can be adjusted in a stepless manner according to the sampling requirement, so that the requirements of different sampling sizes are met.
Description
Technical Field
The utility model belongs to the technical field of medical instruments, and particularly relates to a biopsy surgical device with a sampling window capable of being adjusted in a stepless mode.
Background
Biopsy is a technique for taking out a diseased tissue from a patient body by cutting, clamping, or puncturing, and performing pathological examination, as needed for diagnosis and treatment. The biopsy surgical device is used for sampling living tissues of a human body, and is widely applied to a biopsy surgical device for rotary cutting sampling.
In the operation process, the position and the distance of the withdrawal of the inner cutter tube are controlled according to the sampling amount so as to adjust the window size of the sampling groove; in the prior art, only 3 to 4 fixed adjusting gears are usually arranged, and only the adjustment between the fixed gears can be performed, for example, the sampling groove is opened by 50 percent or 100 percent, the fine continuous adjustment of the windowing size cannot be realized, and the biopsy surgical device can only adapt to a plurality of fixed sampling lengths, so that the adaptation is poor, and the universality of the biopsy surgical device is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a biopsy surgical device with a steplessly adjustable sampling window size, which can achieve continuous stepless adjustment of the sampling window size to meet the requirements of different sampling sizes.
In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:
a biopsy surgical device with a steplessly adjustable sampling window size, comprising:
a handle;
the cutter assembly is connected with the handle and comprises an outer cutter tube and an inner cutter tube, a sampling window is formed in the side face of the front end of the outer cutter tube, the inner cutter tube is sleeved with the outer cutter tube, and the inner cutter tube can axially move relative to the outer cutter tube;
the first motor is arranged in the handle, is connected with the inner cutter tube through a transmission mechanism and is at least used for driving the inner cutter tube to axially move relative to the outer cutter tube so that the front end of the inner cutter tube stops at any axial position of a sampling window of the outer cutter tube, and the size of the sampling window is avoided or shielded by the inner cutter tube in a stepless regulation manner; the output part of the transmission mechanism is matched with the inner cutter pipe through a thread pair, and the axial position of the inner cutter pipe relative to the outer cutter pipe is continuously adjusted through the thread pair so as to perform stepless adjustment on the actual windowing size of the sampling window.
Optionally, the transmission mechanism includes a transmission member fixedly connected to an output end of the first motor, a first thread section is provided on the transmission member, a second thread section in threaded fit with the first thread section is provided on the inner cutter tube, and the first motor drives the transmission member to rotate so as to drive the inner cutter tube to move axially.
Optionally, drive mechanism include with output fixed connection's of first motor driving medium, be provided with first screw thread section on the driving medium, drive mechanism still includes fixed cover and establishes drive sleeve on the interior cutter pipe, but axial relatively fixed, circumference relatively rotatable set up between drive sleeve and the interior cutter pipe, be provided with on the drive sleeve with first screw thread section screw-thread fit's second screw thread section, first motor drive driving medium rotates and then drives interior cutter pipe along axial displacement.
Optionally, the transmission mechanism includes a first driving gear and a first driven gear that are engaged with each other, the first driving gear is disposed on an output shaft of the first motor, a third thread section is disposed on the inner cutter tube, the first driven gear is provided with a fourth thread section, the first driven gear is in threaded fit with the inner cutter tube, the first motor drives the first driving gear to rotate, so that the first driven gear drives the inner cutter tube to move axially and the front end of the inner cutter tube stops at any axial position of the outer cutter tube sampling window.
Optionally, the transmission mechanism further comprises a transmission sleeve fixedly sleeved on the inner cutter tube, the transmission sleeve is provided with the third thread section, and the first driven gear is sleeved on the transmission sleeve.
Optionally, the transmission mechanism further comprises a transmission sleeve sleeved on the inner cutter tube, the transmission sleeve and the inner cutter tube are axially and relatively fixed and circumferentially and relatively rotatably arranged, a third thread section is arranged on the transmission sleeve, and the first driven gear is sleeved on the transmission sleeve.
Optionally, the first motor and the transmission mechanism are used for driving the inner cutter tube to rotate and move axially at the same time; or a second motor is arranged in the handle and used for driving the inner cutter tube to rotate around the axis of the inner cutter tube.
Optionally, the inner cutter tube is driven to rotate by a first motor or driven to rotate by an additional second motor, torque is transmitted between the first motor or the second motor and the inner cutter tube through a transmission assembly, the transmission assembly comprises a second driving gear and a second driven gear which are meshed with each other, the second driving gear is arranged on an output shaft of the second motor, and the second driven gear is sleeved on the inner cutter tube, is circumferentially relatively fixed with the inner cutter tube, and is axially relatively slidably arranged with the inner cutter tube and is used for driving the inner cutter tube to rotate.
Optionally, the transmission sleeve axially extends to form an extension section, one end of the second driven gear is connected with a sleeve, the sleeve is sleeved on the extension section and matched with the extension section through a concave-convex structure to transmit torque, and the transmission sleeve can axially slide relative to the sleeve.
Optionally, a groove is formed in the inner wall of the sleeve along the axial direction of the inner cutter tube, and a protrusion extending into the groove is arranged on the extension section.
Optionally, the cutter assembly further comprises a supporting shell, a transmission window is arranged on the supporting shell, the first driven gear and the second driven gear extend out of the transmission window to the supporting shell, a positioning structure used for axially positioning the first driven gear and the second driven gear is arranged on the supporting shell, and a plurality of convex ribs used for supporting the outer wall of the sleeve are arranged on the inner wall of the supporting shell.
Optionally, the inner cutter tube moves an appointed distance along the axial direction each time, and can continuously move a plurality of same appointed distances, and the value range of each appointed distance is 0.1mm-2 mm.
As mentioned above, the beneficial effects of the utility model are: the inner cutter tube can be continuously adjusted at the position between the condition that the sampling window is completely closed and the condition that the sampling window is completely opened, so that the size of the sampling window in the front-back direction can be adjusted, and the continuous adjustment of the front-back position of the inner cutter tube can be realized due to the fact that the output part of the transmission mechanism is matched with the inner cutter tube through a thread pair, such as a screw rod structure, so that the actual window opening size of the sampling window can be adjusted in a stepless mode according to sampling requirements, and the requirements of accurate excision of focuses of different sizes can be met.
Drawings
FIG. 1 is a schematic diagram of an embodiment;
FIG. 2 is a schematic view of an embodiment in which the inner cutter tube encloses the sampling window;
FIG. 3 is a schematic diagram of an embodiment of a structure of an inner cutter tube for avoiding/shielding a portion of a sampling window;
FIG. 4 is a schematic diagram of an embodiment in which the sampling window is fully open;
FIG. 5 is a schematic view of the transmission of the inner cutter tube in one embodiment;
FIG. 6 is a schematic view of the transmission of the inner cutter tube in another embodiment;
FIG. 7 is a schematic view of the transmission of the inner cutter tube in another embodiment;
FIG. 8 is a perspective view (partially in section) of one embodiment;
FIG. 9 is an enlarged view of a portion of FIG. 8;
FIG. 10 is an axial view of the sleeve engaging an extension of one embodiment;
FIG. 11 is a schematic view of the transmission of the inner cutter tube in a further embodiment;
description of reference numerals
1-a handle; 11-a first electric machine; 12-an output shaft; 13-a first drive gear; 14-a second drive gear; 15-a second motor; 16-a transmission member; 2-a cutter assembly; 21-outer knife pipe; 21 a-a sampling window; 22-inner knife tube; 23-a first driven gear; 24-a second driven gear; 25-a transmission sleeve; 26-an extension; 26 a-bumps; 27-a sleeve; 27 a-a groove; 28-a support housing; 28 a-ribs; 28 b-step; 29-fixation sleeve.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Examples
The front-back direction is referred to as the use state of the biopsy surgical device, and the side facing the patient is the front side and the side away from the patient is the back side.
As shown in fig. 1 to 4, this example illustrates a biopsy surgical device with a steplessly adjustable sampling window size, which includes a handle 1 and a cutter assembly 2 connected together, wherein the cutter assembly 2 includes an outer cutter tube 21 and an inner cutter tube 22 coaxially disposed, a puncture tip is provided at a front end of the outer cutter tube 21, a sampling window 21a is provided at a side surface of the outer cutter tube 21 near the front end, the inner cutter tube 22 is rotatably sleeved in the outer cutter tube 21 around its axis, and the inner cutter tube 22 is capable of moving axially relative to the outer cutter tube 21; or, the inner cutter tube 22 can also be sleeved outside the outer cutter tube 21 in a rotating manner around the axis thereof, and the inner cutter tube 22 can axially move relative to the outer cutter tube 21; or the inner knife tube 22 and the outer knife tube 21 are sleeved, but can only move axially relative to the outer knife tube 21.
A first motor 11 is arranged in the handle 1, the first motor 11 is connected with the inner cutter tube 22 through a transmission mechanism, at least the inner cutter tube 22 is driven to move along the axial direction (front-back direction), and the front end of the inner cutter tube is stopped at any axial position of the sampling window of the outer cutter tube, so that the size (axial size, namely length) of the sampling window 21a caused by the inner cutter tube 22 to be out of or shielded is adjusted in a stepless manner, and the size of the sampling window 21a which actually sucks tissues, namely the axial size of the sampling window 21a which is actually used is adjusted;
wherein, the output part of the transmission mechanism is matched with the inner knife pipe 22 through a screw thread pair, when the first motor 11 drives the transmission mechanism to move, the axial position of the inner knife pipe 22 relative to the outer knife pipe 21 is continuously adjusted through the screw thread pair, and the stepless adjustment of the windowing size of the sampling window 21a is realized.
The front end of the outer cutter tube 21 is a tip end and is used for puncture, a sampling window 21a is arranged on the side surface of the outer cutter tube 21 close to the front end, a cutting edge is arranged at the front end of the inner cutter tube 22, the sampling window 21a is sealed when the inner cutter tube 22 is located at the foremost end during puncture, the inner cutter tube 22 moves backwards after puncture is in place to leave the sampling window 21a, tissues are sucked into the sampling window 21a under the negative pressure condition, at the moment, the inner cutter tube 22 moves forwards, or the inner cutter tube 22 moves forwards and rotates, the tissues entering the sampling window 21a are cut off, and the cut tissues are conveyed to the sample collecting box through the inner cutter tube by atmospheric pressure.
The inner knife pipe 22 can be continuously adjusted at the position between the closed state (the state of fig. 3) and the fully opened state (the state of fig. 5) of the sampling window 21a, so that the size of the sampling window 21a in the front and back direction can be adjusted, and the continuous adjustment of the front and back position of the inner knife pipe 22 can be realized due to the fact that the output part of the transmission mechanism is matched with the inner knife pipe 22 through a thread pair, such as a screw rod structure, so that the actual window opening size of the sampling window 21a can be adjusted in a stepless mode according to sampling requirements, wherein fig. 4 is a schematic diagram of the sampling window 21a partially opened.
As shown in fig. 5, in one embodiment, the transmission mechanism includes a first driving gear 13 and a first driven gear 23 engaged with each other, an output shaft 12 is connected to an output end of the first motor 11, the first driving gear 13 is sleeved on the output shaft 12, and rotates with the output shaft 12, the inner cutter tube 22 is provided with an external thread section (i.e. a third thread section), the inner wall of the first driven gear 23 is provided with an internal thread (i.e. a fourth thread section), the first driven gear 23 is sleeved on the external thread section of the inner cutter tube 22 and is in threaded fit with the inner cutter tube 22, the inner knife pipe 22 is driven to move axially through the matching of the thread pair, the first motor 11 drives the first driving gear 13 to rotate, the first driven gear 23 drives the inner knife pipe 22 to move axially, and the front end of the inner cutter tube 22 is stopped at any axial position of the sampling window 21a of the outer cutter tube 21, thereby changing the size of the inner cutter tube 22 which gives way or blocks the sampling window 21 a.
In other embodiments of course, the first driven gear 23 extends axially out of an externally threaded shaft portion that extends into and threadably engages the inner cutter tube 22.
Or, the transmission mechanism further comprises a transmission sleeve fixedly sleeved on the inner cutter tube 22, the transmission sleeve 25 is provided with the third thread section, and the first driven gear 23 is sleeved on the transmission sleeve.
Or, the transmission mechanism further comprises a transmission sleeve sleeved on the inner cutter tube 22, the transmission sleeve 25 and the inner cutter tube 22 are axially and relatively fixed and circumferentially and rotatably arranged, a third thread section is arranged on the transmission sleeve 25, and the first driven gear 23 is sleeved on the transmission sleeve 25.
The above embodiment is applicable to a biopsy surgical device in which the inner knife tube 22 is rotated to cut, or a biopsy surgical device in which the inner knife tube 22 is not rotated and only moves axially, and when the inner knife tube 22 moves axially, the cutter assembly or the handle is provided with a limit to limit the rotation of the transmission sleeve 25 and the inner knife tube 22.
As shown in fig. 6, in another embodiment, a transmission gear may not be provided, the output end of the first motor 11 is fixedly connected with a transmission member 16 that rotates synchronously therewith, a first thread section is provided on the transmission member 16, the first thread section may be an internal thread or an external thread, a second thread section that matches with the first thread section is provided at the rear portion of the inner cutter tube 22, the transmission member 16 is directly connected with the rear portion of the inner cutter tube 22 in a thread-matching manner, and the first motor 11 drives the transmission member 16 to rotate, thereby driving the inner cutter tube 22 to move axially; the cutter assembly or the handle may also be provided with a limiting strip for limiting the rotation of the inner cutter tube 22 so that the inner cutter tube 22 only moves axially, for example, the outer wall of the inner cutter tube 22 is provided with a limiting strip, and the corresponding cutter assembly is provided with a limiting groove along the front-back direction.
As shown in fig. 7, in another embodiment, a transmission member 16 rotating synchronously with the first motor 11 is fixedly connected to the output end of the first motor 11, a first thread section is provided on the transmission member 16, the first thread section may be an internal thread or an external thread, a transmission sleeve 25 on the inner cutter tube 22 is provided with a second thread section matching with the first thread section on the transmission sleeve 25, the transmission member 16 is in threaded sleeve connection with the transmission sleeve 25, the transmission sleeve 25 and the inner cutter tube 22 are axially fixed and circumferentially arranged in a relative rotation manner, so that the transmission sleeve 25 drives the inner cutter tube 22 to axially move when the first motor 11 rotates, and the front end of the inner cutter tube 22 stops at any axial position of the sampling window 21a of the outer cutter tube 21. This example is applicable to biopsy surgical devices in which the inner blade tube 22 does not rotate, but only moves axially, and a limit may be provided on the cutter assembly or handle to limit the rotation of the inner blade tube 22.
In one embodiment, the first motor 11 is used for driving the inner cutter tube 22 to rotate and move axially at the same time, and the transmission mechanism is a speed reducing mechanism and can be a two-stage or multi-stage gear transmission.
As shown in fig. 8 and 9, in this embodiment, the first motor 11 is a power mechanism that drives the inner cutter tube 22 to rotate and move axially at the same time, and the first motor 11 and the inner cutter tube 22 transmit torque through a transmission assembly to drive the inner cutter tube 22 to rotate, where the transmission assembly includes a second driving gear 14 and a second driven gear 24 that are engaged with each other, the second driving gear 14 is disposed on the output shaft 12 of the first motor 11 and rotates synchronously with the output shaft 12, and the second driven gear 24 is coaxially sleeved on the inner cutter tube 22 and is circumferentially fixed and axially slidably disposed with respect to the inner cutter tube 22, that is, the inner cutter tube 22 rotates with the second driven gear 24, but the inner cutter tube 22 can axially slide with respect to the second driven gear 24 and still transmit torque during sliding.
Specifically, the transmission mechanism further comprises a transmission sleeve 25 fixedly sleeved on the inner cutter tube 22, an external thread is arranged on the transmission sleeve 25, and the first driven gear 23 is sleeved on the transmission sleeve 25 and is in threaded fit with the transmission sleeve 25.
In the structure, the inner cutter tube 22 is driven by the transmission assembly to rotate around the axis thereof, namely, the inner cutter tube and the second driven gear 24 rotate synchronously, meanwhile, the first driven gear 23 is in threaded fit with the inner cutter tube 22, the rotating direction of the inner cutter tube 22 is the same as that of the first driven gear 23, but the rotating speeds are different, and a rotating speed difference exists, and the rotating speed difference drives the inner cutter tube 22 to move axially through threads. Therefore, when the inner cutter tube 22 rotates at a high rotating speed, the axial slow movement adjustment is realized, and the precise adjustment is facilitated.
In one embodiment, the driving sleeve 25 extends axially to form an extension 26, one end of the second driven gear 24 is fixedly connected with a sleeve 27, the sleeve 27 is sleeved on the extension 26 and is matched with the extension 26 to transmit torque through a concave-convex structure, and the driving sleeve 25 can slide axially relative to the sleeve 27 to realize torque transmission during relative axial movement.
As shown in fig. 10, in an embodiment, the inner wall of the sleeve 27 is provided with a plurality of grooves 27a along the axial direction of the inner cutter tube 22, the plurality of grooves 27a are distributed along the circumferential direction, the extension section 26 is provided with a protrusion 26a corresponding to the groove 27a, and the length of the groove 27a along the axial direction of the inner cutter tube 22 is greater than or less than the length of the protrusion 26a along the axial direction of the inner cutter tube 22, but may also be matched by a key slot or a spline.
In this example, the cutter assembly 2 further includes a supporting housing 28, the inner cutter tube 22 and the outer cutter tube 21 are both mounted on the supporting housing 28, a transmission window is disposed on the supporting housing 28, the first driven gear 23 and the second driven gear 24 partially extend out of the supporting housing 28 from the transmission window, a positioning structure for axially positioning the first driven gear 23 and the second driven gear 24 is disposed on the supporting housing 28, so that the first driven gear 23 and the second driven gear 24 are axially fixed and only do rotational movement, in this example, the positioning structure is axially positioned by means of a step 28b formed by the transmission window and an inner wall of the supporting housing 28, in order to ensure support and reduce friction, a plurality of ribs 28a are disposed on an inner wall of the supporting housing 28, and an outer wall of the sleeve 27 is supported on the ribs 28 a.
A circuit board (not shown) is arranged in the handle 1, and the circuit board is connected with the first motor 11.
In another embodiment, as shown in fig. 11, the transmission sleeve 25 and the inner cutter tube 22 are axially and relatively fixed and circumferentially and relatively rotatably disposed, specifically, the transmission sleeve 25 is sleeved on the inner cutter tube 22, the inner cutter tube 22 can rotate relative to the transmission sleeve 25, both ends are axially limited by a limiting ring on the inner cutter tube 22, the transmission sleeve 25 is provided with external threads, and the first driven gear 23 is sleeved on the transmission sleeve 25 and is in threaded fit with the transmission sleeve 25; the rotation of the knife tube 22 in the structure can be driven by the first motor 11, and can also be driven by a second motor arranged additionally. In this embodiment, the inner cutting tube 22 is fixedly sleeved with the fixing sleeve 29, the second driven gear 24 is sleeved outside the fixing sleeve 29, and transmits torque with the fixing sleeve 29 through a key slot, a spline, a hexagonal structure and the like, the embodiment is illustrated as a hexagonal shaft structure, and has a certain length in the axial direction, the fixing sleeve 29 can keep torque transmission with the second driven gear 24 while moving along with the inner cutting tube 22 in the axial direction, and the second driving gear 14 is driven by a second motor 15 which is additionally arranged.
According to the structure, the second motor 15 drives the inner cutter tube 22 to rotate independently, the first motor 11 is used for driving the inner cutter tube 22 to move along the axial direction integrally, and a limiting structure can be arranged on the supporting shell 28 to limit the transmission sleeve 25 to rotate, such as a guide groove and the like, so that the transmission sleeve can move along the axial direction, and the inner cutter tube 22 is driven to move axially.
In order to facilitate the intuitive operation of a doctor, the inner knife tube 22 moves a specified distance along the axial direction every time, the value range of the specified distance is 0.1mm-2mm, and the inner knife tube can continuously move a plurality of same specified distances, namely the inner knife tube can move 0.1mm, 0.5mm, 1mm, 1.5mm, 2mm and the like every time, and the moving distances are the same, so that the continuous and fine adjustment of the moving distances is realized; to achieve a continuous adjustment of the actual window size of the sampling window 21 a.
When the biopsy operation device works, before and during puncture, the inner knife tube 22 moves to the foremost position to seal the sampling window 21a, after puncture is completed, the inner knife tube 22 is driven to move backwards through the first motor 11 according to sampling size requirements until the actual windowing size of the sampling window 21 corresponds to the sampling requirements, then suction is carried out from the rear end of the inner knife tube 22 through the negative pressure device to suck tissues into the sampling window 21, the inner knife tube 22 is driven to move forwards or rotate forwards at high speed to cut the tissues, and the cut tissues are conveyed to the sample collection box through the inner knife tube through atmospheric pressure to finish sampling.
In this embodiment, the inner cutting tube 22 can be continuously adjusted at the position between the sampling window 21a is completely closed and the sampling window 21a is completely opened, so that the actual length (the size in the front-back direction) of the sampling window 21a can be adjusted, and the continuous adjustment of the front-back position of the inner cutting tube 22 can be realized due to the matching of the output part of the transmission mechanism and the inner cutting tube 22 through the screw pair, so that the actual window opening size (and the actual tissue suction length) of the sampling window 21a can be steplessly adjusted according to the sampling requirement, and the accurate cutting requirements of focuses with different sizes can be met. In a specific embodiment, the minimum windowing can be realized by only 5mm, the requirement of accurate excision of a tiny focus is met, and surrounding normal tissues are reserved to the maximum extent; the maximum window can reach 30mm, a larger sample size can be obtained by single excision, the excision efficiency is improved, the operation time is shortened, and the operation requirement of a larger focus is met.
Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (12)
1. A biopsy surgical device having a steplessly adjustable sampling window size, comprising:
a handle;
the cutter assembly is connected with the handle and comprises an outer cutter tube and an inner cutter tube, a sampling window is formed in the side face of the front end of the outer cutter tube, the inner cutter tube is sleeved with the outer cutter tube, and the inner cutter tube can move axially relative to the outer cutter tube;
the first motor is arranged in the handle, is connected with the inner cutter tube through a transmission mechanism and is at least used for driving the inner cutter tube to axially move relative to the outer cutter tube so that the front end of the inner cutter tube stops at any axial position of a sampling window of the outer cutter tube, and the size of the sampling window is avoided or shielded by the inner cutter tube in a stepless regulation manner; the output part of the transmission mechanism is matched with the inner cutter pipe through a thread pair, and the axial position of the inner cutter pipe relative to the outer cutter pipe is continuously adjusted through the thread pair so as to perform stepless adjustment on the actual windowing size of the sampling window.
2. The biopsy surgical device of claim 1, wherein the sampling window size is steplessly adjustable, wherein: the transmission mechanism comprises a transmission piece fixedly connected with the output end of the first motor, a first thread section is arranged on the transmission piece, a second thread section in threaded fit with the first thread section is arranged on the inner cutter tube, and the first motor drives the transmission piece to rotate so as to drive the inner cutter tube to move axially.
3. The biopsy surgical device of claim 1, wherein the sampling window size is steplessly adjustable, wherein: drive mechanism include with the output fixed connection's of first motor driving medium, be provided with first screw thread section on the driving medium, drive mechanism still establishes including fixed cover the transmission cover on the interior cutter pipe, but axial relatively fixed, circumference relatively rotated set up between transmission cover and the interior cutter pipe, be provided with on the transmission cover with first screw thread section screw-thread fit's second screw thread section, first motor drive driving medium rotates and then drives interior cutter pipe along axial displacement.
4. The biopsy surgical device of claim 1, wherein the sampling window size is steplessly adjustable, wherein: the transmission mechanism comprises a first driving gear and a first driven gear which are meshed with each other, the first driving gear is arranged on an output shaft of a first motor, a third thread section is arranged on the inner cutter pipe, a fourth thread section is arranged on the first driven gear, the first driven gear is in thread fit with the inner cutter pipe, the first motor drives the first driving gear to rotate, and the first driven gear drives the inner cutter pipe to move axially and enables the front end of the inner cutter pipe to stop at any axial position of the outer cutter pipe sampling window.
5. The biopsy surgical device of claim 4, wherein the sampling window size is steplessly adjustable, and wherein: the transmission mechanism further comprises a transmission sleeve fixedly sleeved on the inner cutter tube, the transmission sleeve is provided with the third thread section, and the first driven gear is sleeved on the transmission sleeve.
6. The biopsy surgical device of claim 4, wherein the sampling window size is steplessly adjustable, and wherein: the transmission mechanism further comprises a transmission sleeve sleeved on the inner cutter tube, the transmission sleeve and the inner cutter tube are axially and relatively fixed, and the transmission sleeve and the inner cutter tube are circumferentially and relatively rotatably arranged, a third thread section is arranged on the transmission sleeve, and the first driven gear is sleeved on the transmission sleeve.
7. The biopsy surgical device with steplessly adjustable sampling window size of any one of claims 1-6, wherein: the first motor and the transmission mechanism are simultaneously used for driving the inner cutter tube to rotate and axially move; or a second motor is arranged in the handle and used for driving the inner cutter tube to rotate around the axis of the inner cutter tube.
8. The biopsy surgical device with steplessly adjustable sampling window size of claim 5 or 6, wherein: the inner cutter tube is driven to rotate by a first motor or driven to rotate by an additionally arranged second motor, torque is transmitted between the first motor or the second motor and the inner cutter tube through a transmission assembly, the transmission assembly comprises a second driving gear and a second driven gear which are meshed with each other, the second driving gear is arranged on an output shaft of the second motor, and the second driven gear is sleeved on the inner cutter tube, is circumferentially and relatively fixed with the inner cutter tube, and is axially and relatively slidably arranged with the inner cutter tube and used for driving the inner cutter tube to rotate.
9. The biopsy surgical device of claim 8, wherein the sampling window size is steplessly adjustable, and wherein: the transmission sleeve axially extends to form an extension section, one end of the second driven gear is connected with a sleeve, the sleeve is sleeved on the extension section and matched with the extension section through a concave-convex structure to transmit torque, and the transmission sleeve can axially slide relative to the sleeve.
10. The biopsy surgical device of claim 9, wherein the sampling window size is steplessly adjustable, and wherein: the cutter assembly further comprises a supporting shell, a transmission window is arranged on the supporting shell, the first driven gear and the second driven gear extend out of the transmission window to the supporting shell, and a positioning structure used for axially positioning the first driven gear and the second driven gear is arranged on the supporting shell.
11. The biopsy surgical device of claim 10, wherein the sampling window size is steplessly adjustable, and wherein: the inner wall of the supporting shell is provided with a plurality of annular convex ribs, and the outer wall of the sleeve is supported on the annular convex ribs.
12. The biopsy surgical device with steplessly adjustable sampling window size of any one of claims 1-6, wherein: the inner cutter tube moves one designated distance along the axial direction each time and can continuously move a plurality of same designated distances, and the value range of each designated distance is 0.1mm-2 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122813154.0U CN216495408U (en) | 2021-11-16 | 2021-11-16 | Biopsy operation device with stepless adjustable sampling window size |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122813154.0U CN216495408U (en) | 2021-11-16 | 2021-11-16 | Biopsy operation device with stepless adjustable sampling window size |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023087657A1 (en) * | 2021-11-16 | 2023-05-25 | 重庆西山科技股份有限公司 | Window opening size adjustment method for sampling window of biopsy surgical device and control device |
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2021
- 2021-11-16 CN CN202122813154.0U patent/CN216495408U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023087657A1 (en) * | 2021-11-16 | 2023-05-25 | 重庆西山科技股份有限公司 | Window opening size adjustment method for sampling window of biopsy surgical device and control device |
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