CN115645031A - Rotary-cut ablation device and medical equipment - Google Patents

Abstract

The present disclosure provides a rotary-cut ablation device and a medical apparatus. The rotary cutting ablation device is used for realizing radio frequency ablation and rotary cutting suction, and comprises a driving part, a handle part and a needle body part. The driving part is used for providing rotary power for rotary cutting suction; the handle part is detachably connected with the driving part; the needle body part provides functional areas for radiofrequency ablation and rotary cutting suction; wherein, the needle body portion includes rotary cutting needle and ablation needle tubing. The tail end of the rotary cutting needle is connected into the handle part, and the top end of the rotary cutting needle is positioned at the top end of the needle body part and is used for realizing rotary cutting suction; the end of the ablation needle tube is connected to the handle part, the rotary cutting needle is sleeved on the main body, a first distance H1 is reserved between the main body and the outer surface of the rotary cutting needle, and the top end of the ablation needle tube is exposed to realize radio frequency ablation. Therefore, the rotary cutting suction function and the radio frequency ablation function can be combined, so that compared with the existing medical appliance with only one function, the rotary cutting suction function and the radio frequency ablation function, the rotary cutting suction function can break the tissue after the ablation treatment and suck the tissue out of the body, and the recovery time of a patient is reduced to the maximum extent.

Description

Rotary-cut ablation device and medical equipment

Technical Field

The disclosure relates to the technical field of medical equipment, in particular to a rotary cutting ablation device and medical equipment.

Background

The radiofrequency ablation therapy is a therapy method which has the advantages of high efficiency, high speed, uniform heating, thorough thermal coagulation, convenient use and safety for tumor tissues, and has been widely applied to clinic for many years. Specifically, when radio frequency current emitted by the radio frequency energy generator flows through human tissues, water molecules with polarities in the tissues move at high speed due to rapid change of an electromagnetic field to generate heat (namely, an internal heat effect), so that water inside and outside cells is evaporated, dried, shrunk and shed to cause aseptic necrosis, and the aim of treatment is fulfilled. However, when the existing microwave ablation device is used for tumor elimination, the ablated tumor is left in the body and cannot be discharged, and the postoperative rehabilitation of a patient is not facilitated.

Disclosure of Invention

Technical problem to be solved

In order to solve the technical problem that the radiofrequency ablation device in the prior art cannot realize tumor discharge after ablation, the disclosure provides a rotary-cut ablation device and medical equipment.

(II) technical scheme

One aspect of the present disclosure provides a rotary-cut ablation device for realizing radiofrequency ablation and rotary-cut suction, wherein the rotary-cut ablation device comprises a driving part, a handle part and a needle body part. The driving part is used for providing rotary power for rotary cutting suction; the handle part is detachably connected with the driving part and is used as a main framework of the rotary cutting ablation device; the needle body part is correspondingly connected with the handle part and provides a functional area for radio frequency ablation and rotary cutting suction; wherein, the needle body portion includes and revolves cutting needle and ablation needle tubing. The tail end of the rotary cutting needle corresponds to the driving part and is connected in the handle part, and the top end of the rotary cutting needle is positioned at the top end of the needle body part and is used for realizing rotary cutting suction; the end of the ablation needle tube is connected to the handle part, the rotary cutting needle is sleeved on the main body, a first distance H1 is reserved between the main body and the outer surface of the rotary cutting needle, and the top end of the ablation needle tube is exposed to realize radio frequency ablation.

According to an embodiment of the present disclosure, a driving part includes a motor housing, a motor, and a motor cable. The motor shell forms an accommodating space which is used as a support framework of the driving part; the motor is positioned in the accommodating space of the motor shell and used for providing rotary power for rotary cutting suction; the motor cable is connected with the motor and is used for connecting a power supply and a control circuit so as to control the rotation of the motor.

According to an embodiment of the present disclosure, the handle portion includes a support case, a rotation bushing, and a sliding shaft. The supporting shell forms a middle space which is used as a supporting framework of the handle part; the rotating shaft sleeve is positioned at the tail end of the middle space of the supporting shell of the handle part and is connected with a motor shaft of a motor of the driving part, so that the rotating shaft sleeve can be driven to rotate together when the motor shaft is driven to rotate by the motor; the sliding shaft sleeve is sleeved in the rotating shaft sleeve and moves back and forth relative to the rotating shaft sleeve, and meanwhile, the rotating shaft sleeve drives the sliding shaft to rotate together when rotating; the top end of the sliding shaft is connected with the tail end of the rotary cutting needle, and the rotary cutting needle is driven to rotate together when the sliding shaft rotates.

According to an embodiment of the present disclosure, the handle portion further comprises a sliding button. The sliding button is arranged corresponding to the sliding groove in the supporting shell along the length direction, the bottom end of the sliding button is embedded in a connecting structure of the top end of the sliding shaft and the tail end of the rotary cutting needle, the connecting structure is driven by the sliding shaft to rotate relative to the sliding button, and when the sliding button is subjected to external force, the sliding button is clamped in the connecting structure to drive the connecting structure to move back and forth along the sliding groove, so that the sliding shaft is driven to move back and forth relative to the rotating shaft sleeve.

According to an embodiment of the present disclosure, the handle portion further comprises a three-way tube, a suction tube, and an electrode cable. The three-way pipe is provided with a middle expansion structure, is positioned in the middle space of the supporting shell, is sleeved on the rotary cutting needle, and has a second distance H2 between the middle space and the bottom end of the sliding button; the suction tube is communicated with the three-way tube and is used for performing suction and discharge operations in the rotary cutting suction process; the electrode cable is connected with the tail end of the ablation needle tube in the top end of the handle part, and provides a power supply for the ablation needle tube to realize radio frequency ablation.

According to an embodiment of the present disclosure, the needle body further comprises an insulating tube. The tail end of the insulating tube is connected with the top end of the handle part and sleeved outside the ablation needle tube; wherein, the length L3 of the insulating tube relative to the handle part is less than the length L2 of the ablation needle tube relative to the handle part.

According to an embodiment of the present disclosure, a rotational atherectomy needle comprises a needle head and a needle shaft. The top end of the needle rod is connected with the tail end of the needle head, the needle rod is sleeved in the ablation needle tube, the tail end of the needle rod is connected with the top end of the sliding shaft of the handle part, and the needle head is driven to rotate together when the sliding shaft rotates and/or the needle head is driven to perform telescopic action relative to the ablation needle tube when the sliding shaft moves back and forth relative to the handle part.

According to an embodiment of the present disclosure, a needle includes a needle tip and a spiral. The needle point is provided with a triangular pyramid structure; the top end of the spiral body is connected with the bottom end of the needle point and is provided with a spiral rotary cutting edge structure; when the rotary cutting needle is retracted to the ablation needle tube, the needle point is always exposed out of the top end opening of the ablation needle tube.

According to the embodiment of the disclosure, the projection radius R1 of the needle head in the axial direction is the same as the projection inner diameter R0 of the ablation needle tube in the axial direction; the projected radius R2 of the needle shaft in the axial direction is smaller than the projected inner diameter R0 of the ablation needle tube in the axial direction so as to form a first distance H1 between the two.

Another aspect of the present disclosure provides a medical device, comprising the rotational atherectomy ablation device described above.

(III) advantageous effects

The present disclosure provides a rotary-cut ablation device and a medical apparatus. The rotary cutting ablation device is used for realizing radio frequency ablation and rotary cutting suction, and comprises a driving part, a handle part and a needle body part. The driving part is used for providing rotary power for rotary cutting suction; the handle part is detachably connected with the driving part and is used as a main framework of the rotary cutting ablation device; the needle body part is correspondingly connected with the handle part and provides a functional area for radio frequency ablation and rotary cutting suction; wherein, the needle body portion includes rotary cutting needle and ablation needle tubing. The tail end of the rotary cutting needle corresponds to the driving part and is connected in the handle part, and the top end of the rotary cutting needle is positioned at the top end of the needle body part and is used for realizing rotary cutting suction; the end of the ablation needle tube is connected to the handle part, the rotary cutting needle is sleeved on the main body, a first distance H1 is reserved between the main body and the outer surface of the rotary cutting needle, and the top end of the ablation needle tube is exposed to realize radio frequency ablation. Therefore, the rotary cutting suction function and the radio frequency ablation function can be combined, so that compared with the existing medical appliance with only one function, the rotary cutting suction function and the radio frequency ablation function, the rotary cutting suction function can break the tissue after the ablation treatment and suck the tissue out of the body, and the recovery time of a patient is reduced to the maximum extent.

Drawings

Fig. 1 schematically illustrates a structural component side view of an atherectomy device according to an embodiment of the present disclosure with an atherectomy needle 310 extended;

fig. 2 schematically illustrates a structural component side view of an atherectomy ablation device in a retracted state of the atherectomy needle 310, according to an embodiment of the present disclosure;

fig. 3 schematically illustrates a structural component partial side view of an extended atherectomy needle 310 corresponding to the atherectomy ablation device of fig. 1, in accordance with an embodiment of the present disclosure;

fig. 4 schematically illustrates a partially assembled side view of a structure of a needle tip 3111 of a needle 311 of a rotary atherectomy needle 310 corresponding to the retraction of the rotary atherectomy device of fig. 2, in accordance with an embodiment of the present disclosure; and

fig. 5 schematically illustrates an axial structural component projection view of an atherectomy needle 310 of the atherectomy device of fig. 1 or 2, in accordance with an embodiment of the present disclosure.

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 specific embodiments and the accompanying drawings.

It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Further, the above definitions of the various elements and methods are not limited to the various specific structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by those of ordinary skill in the art.

It should also be noted that directional terms, such as "upper", "lower", "front", "rear", "left", "right", and the like, used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present disclosure. Throughout the drawings, like elements are represented by like or similar reference numerals. Conventional structures or constructions will be omitted when they may obscure the understanding of the present disclosure.

And the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. Furthermore, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or any ordering of one element relative to another or relative to a method of manufacture, and the use of such ordinal numbers is only used to clearly distinguish one element having a certain name from another element having a same name.

Those skilled in the art will appreciate that the modules in the device of an embodiment may be adaptively changed and placed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Also in the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, disclosed aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.

In order to solve the technical problem that the radiofrequency ablation device in the prior art cannot realize tumor discharge after ablation, the disclosure provides a rotary-cut ablation device and medical equipment.

As shown in fig. 1-5, one aspect of the present disclosure provides an atherectomy ablation device 100 for performing radiofrequency ablation and atherectomy suction, comprising a drive section 101, a handle section 102, and a needle section 103.

The driving part 101 is used for providing rotary power for rotary cutting suction;

the handle part 102 is detachably connected with the driving part 101 and is used as a main framework of the rotary cutting ablation device;

the needle body part 103 is correspondingly connected with the handle part 102 and provides a functional area for radio frequency ablation and rotary cutting suction;

the needle body 103 includes a rotary cutting needle 310 and an ablation needle tube 320.

The rotary cutting needle 310 has a distal end corresponding to the driving part 101, is connected to the handle part 102, and has a distal end located at the distal end of the needle body 103, and is used for rotary cutting suction;

the ablation needle tube 320 is connected to the handle portion 102 at the end, and the rotary cutting needle 310 is sleeved with the main body, and has a first distance H1 with the outer surface of the rotary cutting needle 310, and the tip is exposed for implementing radiofrequency ablation.

In the disclosed embodiment, the rf ablation is mainly an operation of generating heat in the lesion (e.g. cancer tissue) tissue by using rf to kill lesion cells (e.g. cancer cells) to achieve lesion ablation. Rotary cutting and suction are mainly achieved by cutting off target tissues through physically controlling needle insertion rotation and simultaneously performing suction and removal operations.

The driving unit 101 is mainly used to provide rotational power for the rotational operation in the rotational cutting suction, and drive the needle body 103 to rotate. The detachable connection between the driving part 101 and the handle part 102 enables the rotary-cut ablation device to directly abandon the handle part 102 and the needle body part 103 after each radio-frequency ablation and rotary-cut suction operation is realized, so that the driving part 101 is recycled, and the subsequent operation is not influenced.

The handle portion 102, which serves as a main structure of the rotational atherectomy ablation device according to the embodiment of the present disclosure, can provide a hand-held portion of the rotational atherectomy ablation device for an operator (i.e., a user, such as a surgeon), so as to facilitate operation, and can also provide a receiving space formed by the main structure of the rotational atherectomy ablation device.

The needle body 103, which is a portion directly contacting lesion tissue, may be connected to the handle 102 at one end, so that it generally maintains rigidity with respect to the handle 102, and the fixed position is not prone to shift, bend, etc. with respect to the handle 102, thereby ensuring high stability during actual operation, and ensuring operation accuracy of rf ablation and rotational cutting suction.

The needle body 103 mainly implements the radio frequency ablation operation on the lesion tissue through the ablation needle tube 320, wherein the ablation needle tube 320 can be electrified to generate a radio frequency effect, so as to implement the ablation operation on the contacted or close lesion tissue. In addition, the needle body 103 performs rotary cutting treatment on the lesion tissue after the ablation operation mainly by the rotary cutting needle 310 under the rotation driving of the driving part 101, and performs corresponding suction operation at the same time to suck and remove the lesion tissue after the rotary cutting in real time.

The rotary cutting needle 310 is sleeved in the ablation needle tube 320, and the end portion of the rotary cutting needle 310 is connected to the structure of the handle portion 102 corresponding to the driving portion 101, the rotary cutting needle 310 can rotate relative to the ablation needle tube 320, and the end portion of the ablation needle tube 320 is fixed in the handle portion 102, so that the rotary cutting needle cannot rotate relative to the handle portion 102. The space H1 is formed between the outer surface of the shaft of the rotary-cut needle 310 and the inner surface of the ablation needle tube 320, so that the rotary-cut tissue can be sucked and removed through the gap formed between the outer surface of the shaft of the rotary-cut needle 310 and the inner surface of the ablation needle tube 320 by the space H1, i.e. the rotary-cut tissue can be sucked and removed in real time through the gap of the space H1.

In addition, the tip of the ablation needle tube 320 exposed at the handle portion 102 is exposed to air, so that contact with lesion tissue can be achieved to perform an electrical ablation operation.

Therefore, the rotary cutting suction and the radiofrequency ablation can be combined, and compared with the existing medical appliance with only one function, the rotary cutting suction and radiofrequency ablation combined medical appliance can break the tissue after the ablation treatment and suck out of the body in time, so that the operation time and the operation times of a patient are reduced to the maximum extent, the recovery time of the patient can be shortened, and the recovery of the patient is facilitated. The ablated tissue can be broken by rotating the rotary cutting needle 310, and the broken tissue is sucked out of the body of the patient by rotating and sucking, so that the probability of complications is reduced, and the recovery time of the patient is shortened. Wherein, the rotary cutting ablation device has simple structure, reasonable design and easy operation.

As shown in fig. 1 and 2, according to an embodiment of the present disclosure, the driving part 101 includes a motor housing 110, a motor 120, and a motor cable 130.

The motor housing 110 forms an accommodating space as a support structure of the driving part 101;

the motor 120 is positioned in the accommodating space of the motor shell 110 and is used for providing rotary power for rotary cutting suction;

a motor cable 130 is connected to the motor 120 for connection to a power source and control circuitry to control rotation of the motor 120.

The end of motor housing 110 corresponding to handle portion 102 has an opening to facilitate access of the motor shaft of motor 120 toward the interior of handle portion 102. And the opening is provided with a clamping structure corresponding to the end face of the motor housing 110, so that the driving part 101 and the handle part 102 can be easily clamped and fixed into a whole by clamping and the like, thereby realizing the detachable connection of the two. In addition to the clamping, the detachable connection between the two can be realized by fixing means such as screws, so that the two can be easily combined and separated, and the driving part 101 can be conveniently recycled.

The motor 120 is a motor shaft having a rotation output function, and can transmit the rotation power of the motor 120 to the internal structure of the handle portion 102, so as to transmit the rotation operation.

The motor cable 130 can be connected to a power source and control circuitry and also to the motor 120 to provide power for the rotational output of the motor 120 and to enable adjustment of rotational parameters such as rotational direction, rotational speed, and torque of the motor shaft of the motor 120.

As shown in fig. 1 and 2, according to an embodiment of the present disclosure, the handle portion 102 includes a support housing 210, a rotation bushing 220, and a sliding shaft 230.

The support housing 210 forms a central space as a support structure for the handle portion 102;

the rotating shaft sleeve 220 is positioned at the end of the middle space of the supporting shell 210 of the handle part 102, and is connected with the motor shaft of the motor 120 of the driving part 101, so that when the motor shaft is driven by the motor 120 to rotate, the rotating shaft sleeve 220 can be driven to rotate together;

the sliding shaft 230 is sleeved in the rotating shaft sleeve 220 and moves back and forth relative to the rotating shaft sleeve 220, and meanwhile, the rotating shaft sleeve 220 drives the sliding shaft 230 to rotate together when rotating;

the top end of the sliding shaft 230 is connected to the end of the rotary cutting needle 310, and the rotary cutting needle 310 is driven to rotate together when the sliding shaft 230 rotates.

The support housing 210 is an elongated housing structure that serves primarily as a receiving structure for the internal structural components of the handle portion 102, providing a central space for receiving and supporting the same.

The rotating shaft sleeve 220 is located at the end of the handle portion 102, and the end of the rotating shaft sleeve is sleeved on the top end of the motor 120 of the driving portion 101, and can drive the rotating shaft sleeve 220 to rotate when the motor shaft is driven to rotate by the motor 120.

The sliding shaft 230 is sleeved in the sleeve hole of the rotating sleeve 220, and the section of the sliding shaft 230 is irregular and matched with the section of the sleeve hole of the rotating sleeve 220 in the radial direction perpendicular to the length direction a of the handle part 102, so that the sliding shaft 230 can be driven to rotate together when the rotating sleeve 220 rotates. The sliding shaft 230 has a long cylindrical structure and can move back and forth (i.e., in the length direction a) relative to the rotating shaft sleeve 220. That is, the rotation shaft sleeve 220 is kept stationary in the length direction a, but the sliding shaft 230 may slide back and forth with respect to the rotation shaft sleeve 220 to be retracted and extended in the rotation shaft sleeve 220.

The end of the needle rod of the rotary cutting needle 310 of the needle body 103 is fixed to the top end of the sliding shaft 230, so that by means of the sliding connection between the rotary shaft sleeve 220 and the sliding shaft 230, the rotary shaft sleeve 220 can transmit the rotary motion to the sliding shaft 230, and the sliding shaft 230 can reciprocate back and forth relative to the rotary shaft sleeve 220, i.e., simultaneously drive the rotary cutting needle 310 to reciprocate back and forth, and can rotate, thereby ensuring the rotary cutting. In other words, the motor 120 of the driving unit 101 can transmit the rotational motion to the rotary cutting pin 310 through the rotary sleeve 220 and the sliding shaft 230 of the handle unit 102, and finally the rotary cutting pin 310 performs the rotational motion.

As shown in fig. 1 and 2, according to an embodiment of the present disclosure, handle portion 102 further includes a slide button 240.

The sliding button 240 is disposed corresponding to the sliding slot along the length direction a of the supporting housing 210, the bottom end of the sliding button 240 is embedded in a connecting structure connecting the top end of the sliding shaft 230 and the end of the rotary-cut needle 310, the connecting structure is driven by the sliding shaft 230 to rotate relative to the sliding button 240, and when the sliding button 240 is subjected to an external force, the sliding button 240 is clamped in the connecting structure to drive the connecting structure to move back and forth along the sliding slot, so as to drive the sliding shaft 230 to move back and forth relative to the rotary shaft sleeve 220.

The connection structure between the end of the rotary cutting needle 310 and the top end of the sliding shaft 230 can be formed by bonding together, such as epoxy resin, or by pressing thermosetting or laser welding to fix the connection between the end of the rotary cutting needle 310 and the top end of the sliding shaft 230, thereby preventing the connection between the rotary cutting needle 310 and the sliding shaft 230 from being broken. The connection structure has a cylindrical structure form with a concave middle and convex two ends in the length direction a, the concave position can correspond to the sliding button 240, so that the sliding button 240 can be embedded in the concave position, and when the sliding shaft 230 and the rotary cutting needle 310 rotate simultaneously, the connection structure is driven to rotate without affecting the sliding button 240, in other words, the design of the sliding button 240 at the connection structure position does not hinder the connection structure from rotating along with the sliding shaft 230.

The support shell 210 of the handle portion 102 has a sliding slot along the length direction a, and the sliding slot can be used for clamping the sliding button 240, so that the sliding button 240 can slide back and forth along the sliding slot along the length direction a. When the operator presses the sliding button 240 with his/her finger and applies an external force forward or backward, the connection structure is driven to move forward or backward by the concave engagement between the connection structure and the sliding button 240, so as to drive the sliding shaft 230 to extend or retract relative to the rotating sleeve 220, and ensure that the rotary cutting needle 310 can extend or retract relative to the ablation needle tube 320. Wherein the sliding button 240 may move a distance corresponding to the length of the sliding chute, and in particular, may be equal to the maximum distance that the rotary cutting needle can extend and retract relative to the ablation needle tube 320.

The sliding button 240 of the needle body 102 is slidably connected with the side wall of the connecting structure corresponding to the sliding shaft 230, and specifically, the sliding button 240 may only contact with the convex side surfaces on two sides of the concave position of the connecting structure, but does not contact with the surface of the concave position, so as to ensure that the sliding button 240 can push the rotary cutting needle 310 to reciprocate without obstructing or affecting the rotation thereof.

To sum up, for the rotary cutting operation, the motor shaft of the motor 120 of the driving part 101 is inserted into one side of the rotating shaft sleeve 220 of the handle part 102, and can drive the rotating shaft sleeve 220 to rotate along with the motor shaft, the other side of the rotating shaft sleeve 220 is slidably connected with the sliding shaft 230, the rotating shaft sleeve 220 can transmit the rotating motion to the sliding shaft 230, meanwhile, the sliding button 240 and the connecting structure of the sliding shaft 230 are in sliding connection, and the sliding shaft 230 can be driven to move back and forth relative to the rotating shaft sleeve 220 by pushing the sliding button 240 back and forth; the rotary cutting needle 310 is fixedly connected with the sliding shaft 230, the ablation needle tube 320 is fixed relative to the handle portion 102, and pushing the sliding button 240 forward and backward controls the rotary cutting needle 310 to move forward and backward relative to the ablation needle tube 320, i.e. to extend the rotary cutting edge or to retract the rotary cutting edge.

As shown in fig. 1 and 2, the handle portion 102 further includes a tee 250, a suction tube 260, and an electrode cable 270, in accordance with embodiments of the present disclosure.

The three-way pipe 250 has a middle expanded structure, is positioned in the middle space of the support shell 210, is sleeved on the rotary cutting needle 310, and has a second distance H2 between the middle space and the bottom end of the sliding button 240;

the suction tube 260 is communicated with the three-way tube 250 and is used for performing suction and discharge operations in the rotary cutting suction process;

the electrode cable 270 is connected with the end of the ablation needle tube 320 inside the top end of the handle part 102, and provides power for the ablation needle tube 320 to realize radiofrequency ablation.

The middle expanded structure of the three-way tube 250 can be used for temporarily storing the lesion debris tissue sucked through the gap between the rotary cutting needle 310 and the ablation needle tube 320, the top end of the middle expanded structure is communicated with the gap between the rotary cutting needle 310 and the ablation needle tube 320, and the rear end only allows the needle rod of the rotary cutting needle 320 to pass through and keeps a seal with the surface of the needle rod, so that the lesion debris tissue liquid is prevented from entering the space where the sliding shaft 230 is located. Wherein the seal with the needle shaft is also required to ensure that the needle shaft is able to rotate relative to the tee 250, i.e., the rotating seal is leak-free.

In addition, the side end of the middle expanding structure of the three-way pipe 250 is provided with a suction port for communicating with the suction tube 260, and the lesion debris tissue passes through the gap between the rotary cutting needle 310 and the ablation needle tube 320 and is sucked and moved out of the body of the patient through the three-way pipe 250 and the suction tube 260. The three-way pipe 250, the ablation needle tube 320 and the suction tube 260 are bonded well without leakage, and the three-way pipe 250 and the rotary cutting needle 310 are sealed in a rotating manner without leakage.

Wherein, one end of the suction tube 12 is fixed on the suction outlet of the three-way tube 250, the other end is connected with a suction pump (not shown), one end of the three-way tube 250 is connected with the ablation needle tube 320, and the other end is sealed by the rotary cutting needle 310 in a rotating way. Therefore, when the suction pump is started, the tumor tissue broken by the rotary cutting edge of the rotary cutting needle 310 can be very conveniently sucked out to the three-way pipe 250 and discharged through the suction pipe 260.

The electrode cable 270 serves as a lead for the ablation needle 320 to provide power for the ablation operation of the ablation needle 320. Specifically, the electrode cable 270 is attached to the distal end of the ablation needle 320, and electrical connection between the two may be achieved by soldering. However, the electrode cable 270 is powered to control the ablation needle 320 to produce the effect of rf ablation.

As shown in fig. 1-5, according to an embodiment of the present disclosure, the needle body 103 further includes an insulating tube 330.

The tail end of the insulating tube 330 is connected with the top end of the handle part 102 and sleeved outside the ablation needle tube 320;

wherein, the length L3 of the insulating tube 330 relative to the handle part 102 is smaller than the length L2 of the ablation needle tube 320 relative to the handle part.

In the needle body 103, the rotary-cut needle 310 has the longest length L1, and is directly connected to the top end of the sliding shaft 230 of the handle 102, and the needle 311 is exposed outside the ablation needle tube 320; secondly, the length L2 of the ablation needle tube 320, the end of which may be welded to the front end of the tee 250 of the handle 102, and the tip of which may be located outside the insulating tube 330; the insulating tube 330 has the smallest length L3, and the distal end thereof can be fixed in the front end of the handle portion 102 and covers the outer surface of the ablation needle tube 320, and exposes the distal end portion of the ablation needle tube 320, so that most of the ablation needle tube 320 except the distal end is covered by the insulating tube, thereby effectively protecting an operator during the rf ablation operation (i.e., the length of the portion of the ablation needle tube 320 outside the handle portion 102 is greater than the length of the portion of the insulating tube outside the handle portion 102). And the tip part of the ablation needle tube 320 exposed by the insulating tube 330 can effectively perform the radio frequency ablation operation, so that the ablation can be accurately realized.

The insulating tube 330 can be a transparent insulating tube, has better aesthetic property and visualization effect, and can protect the ablation operation of the ablation needle tube 320 and visually feed back the current state of the ablation needle tube 320.

As shown in fig. 1-5, according to an embodiment of the present disclosure, rotary cutting needle 310 includes a needle tip 311 and a needle shaft 312.

The needle bar 312 is connected with the end of the needle 311 at the top end, sleeved in the ablation needle tube 320, and connected with the top end of the sliding shaft 230 of the handle part 102 at the bottom end, and drives the needle 311 to rotate together when the sliding shaft 230 rotates, and/or drives the needle 311 to perform telescopic action relative to the ablation needle tube 320 when the sliding shaft 230 moves back and forth relative to the handle part 102.

The rotary cutting needle 310 may be an integrated needle structure made of stainless steel, and the needle 311 has a sharp design, which may be beneficial to tissue penetration. The rotary cutting needle 310 may rotate and retract back and forth at the same time, or sequentially (e.g., retract and then rotate, or rotate and then retract, or retract during the rotation process, which is not limited specifically). The needle shaft 312 is mainly used for transmitting rotation and extension, so as to drive the needle 311 to rotate and extend relative to the ablation needle 320.

As shown in fig. 1-5, according to embodiments of the present disclosure, needle 311 includes a needle tip 3111 and a screw 3112.

The needle tip 3111 has a triangular pyramid structure;

the top end of the spiral body 3112 is connected with the bottom end of the needle point 3111 and is provided with a spiral rotary cutting edge structure;

when the rotary-cut needle 310 is retracted into the ablation needle tube 320, the needle tip 3111 is always exposed out of the top opening of the ablation needle tube 320.

The needle tip 3111 of the needle head 311 of the rotary cutting needle 310 is designed to be a triangular pyramid, so that the puncture action can be effectively realized, and the rotary cutting function can be achieved during rotation.

The spiral body 3112 is used as a main support body of the needle tip 3111, and can also be smoothly rotary-cut by using a spiral rotary-cutting edge structure thereof, and is more remarkable in developing operation, thereby being beneficial to judging the needle insertion position. The spiral cutting edge structure can directly send rotary-cut tissue scraps into a gap between the rotary cutting needle 310 and the ablation needle tube 320 along a spiral cutting edge along with the rotation action, so that the suction and discharge of tissues are more facilitated, and the real-time rotary-cut suction is realized.

In addition, the needle 311 can be used to effectively reduce resistance when inserted into tissue and allow for better visualization under ultrasound and CT.

As shown in fig. 1-5, according to the embodiment of the present disclosure, a projected radius R1 of the needle 311 in the axial direction is the same as a projected inner diameter R0 of the ablation needle 320 in the axial direction; the projected radius R2 of the needle shaft 312 in the axial direction is smaller than the projected inner diameter R0 of the ablation needle 320 in the axial direction to form a first distance H1 therebetween.

As shown in fig. 5, the spiral 3112 is used as the main body supporting portion of the needle 311, and the radial dimension of the outer surface of the spiral 3112 relative to the central axis O of the rotary cutting needle 310 can be used as the maximum radial dimension R1 of the needle 311, which is the same as the inner radial dimension R0 of the ablation needle tube 320 in the axial direction, i.e. the outer surface of the spiral 3112 is smoothly combined with the inner wall surface of the ablation needle tube 320, and there is almost no gap. Therefore, in the process of needle insertion, when the needle 311 is kept retracted in the ablation needle tube 320, no other liquid or tissue directly enters the gap between the ablation needle tube 320 and the needle rod 312 of the rotary-cut needle 310, so as to avoid blockage, and simultaneously, the surface of the needle body 103 is ensured to be smooth, further damage to normal tissues in the needle insertion operation is prevented, and the influence on a patient is reduced.

In addition, the radius of the outer wall of the ablation needle tube 320 is the same as the radius of the inner wall of the insulation tube 330 covering the ablation needle tube, i.e. the two are smoothly combined, and almost no gap exists, so that the smoothness of the surface of the needle body 103 is ensured, and the insulation tube 330 prevents the damage to normal tissues and reduces the influence on the patient in the process of performing needle insertion operation by matching with the ablation needle tube 320.

Further, a space H1 (i.e., H1= R0-R2) is provided between a radial dimension R2 of the outer surface of the needle shaft 312 (shown by a broken line in fig. 5) and an inner radial dimension R0 of the inner wall surface of the ablation needle tube 320, so that a tissue discharge channel for rotary cutting suction can be formed.

Based on the rotary-cut ablation device of the embodiment of the present disclosure, an operator may generally connect the handle portion 102 with the needle portion 103 with the driving portion 101 and connect other connecting wires, insert the needle portion 103 into lesion tissue to be ablated in the body of a patient, perform radiofrequency ablation, and after the ablation is finished, may use the rotary-cut function and the suction function to break and suck the ablated tissue to the outside of the body of the patient.

Therefore, the rotary-cut ablation device disclosed by the embodiment of the disclosure can combine the rotary-cut needle with the radio-frequency ablation needle, the tissue after ablation can be smashed through the rotation of the rotary-cut needle, and the smashed tissue is discharged out of the body through rotation and suction, the probability of complications can be reduced, and the recovery time of a patient can be shortened.

Another aspect of the present disclosure provides a medical device, comprising the rotational atherectomy ablation device described above. The medical device of the present disclosure may be a medical instrument device applied to clinical surgery, such as a sampling device with a puncture needle, a surgical device with a radio frequency function, and the like, and is not limited in particular.

So far, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A rotary-cut ablation device for achieving radio frequency ablation and rotary-cut suction, wherein, includes:

the driving part is used for providing rotary power for rotary cutting suction;

the handle part is detachably connected with the driving part and is used as a main framework of the rotary cutting ablation device;

the needle body part is correspondingly connected with the handle part and provides functional areas for radiofrequency ablation and rotary cutting suction;

wherein the needle body portion comprises:

the rotary cutting needle is connected with the handle part at the tail end corresponding to the driving part, and the top end of the rotary cutting needle is positioned at the top end of the needle body part and used for realizing rotary cutting suction;

the end of the ablation needle tube is connected to the handle part, the main body is sleeved with the rotary cutting needle, a first distance H1 is reserved between the outer surface of the rotary cutting needle, and the top end of the ablation needle tube is exposed to realize radiofrequency ablation.

2. The rotational atherectomy ablation device of claim 1, wherein the drive section comprises:

a motor housing forming an accommodating space as a support structure of the driving part;

the motor is positioned in the accommodating space of the motor shell and used for providing rotary power for rotary cutting suction;

and the motor cable is connected with the motor and is used for connecting a power supply and a control circuit so as to control the rotation of the motor.

3. The rotational atherectomy ablation device of claim 1, wherein the handle portion comprises:

a support shell forming a middle space as a support framework of the handle part;

the rotating shaft sleeve is positioned at the tail end of the middle space of the supporting shell of the handle part and is connected with a motor shaft of a motor of the driving part so as to drive the rotating shaft sleeve to rotate together when the motor shaft is driven to rotate by the motor;

the sliding shaft is sleeved in the rotating shaft sleeve and moves back and forth relative to the rotating shaft sleeve, and meanwhile, the rotating shaft sleeve drives the sliding shaft to rotate together when rotating;

the top end of the sliding shaft is connected with the tail end of the rotary cutting needle, and the rotary cutting needle is driven to rotate together when the sliding shaft rotates.

4. The rotational atherectomy ablation device of claim 3, wherein the handle portion further comprises:

sliding button, corresponding to along length direction's spout setting on the support shell, sliding button's bottom gomphosis is in the top of sliding shaft with on the end-to-end connection's of rotary cutting needle connection structure, connection structure is driven relatively by the sliding shaft sliding button makes the rotation, and when sliding button receives external force, sliding button card goes into connection structure drives connection structure follows the back-and-forth movement is made to the spout, thereby drives the sliding shaft is relative the back-and-forth movement is made to the rotation axis cover.

5. The rotational atherectomy ablation device of claim 4, wherein the handle portion further comprises:

the three-way pipe is provided with a middle expansion structure, is positioned in the middle space of the supporting shell, is sleeved on the rotary cutting needle, and has a second distance H2 between the middle space and the bottom end of the sliding button;

the suction tube is communicated with the three-way tube and is used for performing suction and discharge operations in the rotary cutting suction process;

the electrode cable is arranged inside the top end of the handle part and connected with the tail end of the ablation needle tube, and a power supply is provided for the ablation needle tube to realize radio frequency ablation.

6. The rotational atherectomy ablation device of claim 1, wherein the needle body further comprises:

the tail end of the insulating tube is connected with the top end of the handle part and sleeved outside the ablation needle tube;

wherein a length L3 of the insulating tube relative to the handle portion is smaller than a length L2 of the ablation needle cannula relative to the handle portion.

7. The rotational atherectomy ablation device of claim 1, wherein the rotational cutting needle comprises:

a needle head is arranged at the front end of the needle body,

the needle bar, the top with the syringe needle end-to-end connection, the cover is established in melting the needle tubing, terminal with the top of the sliding shaft of handle portion is connected, and when the sliding shaft is rotatory, drive the syringe needle rotates in the lump, and/or when the relative handle portion of sliding shaft does the back-and-forth movement, drive the syringe needle is relative melting the needle tubing and doing flexible action.

8. The rotational atherectomy ablation device of claim 7, wherein the needle comprises:

a needle tip having a triangular pyramid structure;

the top end of the spiral body is connected with the bottom end of the needle point and is provided with a spiral rotary cutting edge structure;

when the rotary cutting needle is retracted to the ablation needle tube, the needle point is always exposed out of the top end opening of the ablation needle tube.

9. The rotational atherectomy ablation device of claim 7,

the axial projection radius R1 of the needle head is the same as the axial projection inner diameter R0 of the ablation needle tube;

the projection radius R2 of the needle rod in the axial direction is smaller than the projection inner diameter R0 of the ablation needle tube in the axial direction so as to form a first distance H1 between the two.

10. A medical device comprising the atherectomy ablation device of any of claims 1-9.

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