CN220158347U - Cutter head assembly for quickly replacing tissue pad and ultrasonic cutter - Google Patents
Cutter head assembly for quickly replacing tissue pad and ultrasonic cutter Download PDFInfo
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- CN220158347U CN220158347U CN202321220868.3U CN202321220868U CN220158347U CN 220158347 U CN220158347 U CN 220158347U CN 202321220868 U CN202321220868 U CN 202321220868U CN 220158347 U CN220158347 U CN 220158347U
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- inner sleeve
- clamping arm
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- tissue
- sleeve
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- 238000001125 extrusion Methods 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001631457 Cannula Species 0.000 description 1
- 208000013935 Electric injury Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model relates to a tool bit assembly and an ultrasonic knife for rapidly replacing a tissue pad, which comprise a tool bit, wherein the tool bit is matched with the tissue pad to clamp tissue to be cut; the inner sleeve is sleeved outside the cutter head; the outer sleeve is sleeved outside the inner sleeve, and the inner sleeve can reciprocate relative to the outer sleeve along the length direction of the inner sleeve; the clamping arm is detachably connected with the tissue pad, and one end close to the outer sleeve is rotationally connected with the outer sleeve; the clamping arm is also provided with a fixed block positioned inside the inner sleeve and an extrusion block positioned outside the inner sleeve, and the extrusion block extrudes the inner sleeve and drives the inner sleeve to move in a direction away from the tool bit when the clamping arm rotates around the outer sleeve so as to separate the fixed block from the inner sleeve. The extrusion block is driven to drive the inner sleeve to move by utilizing the rotation of the clamping arm so as to separate the fixing block from the inner sleeve, thereby realizing the separation of the clamping arm and the inner sleeve, enlarging the rotation range of the clamping arm, providing a larger space for the replacement of the tissue pad, and having simple structure, stability and reliability.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a cutter head assembly for quickly replacing a tissue pad and an ultrasonic knife.
Background
The ultrasonic surgical knife has been applied on a large scale for 20 years, and has the advantages that compared with other surgical methods: the generated smoke is less, the operation vision is clear, the thermal injury is small, the effects of tissue cutting, coagulation and separation are achieved, the cutting and coagulation range can be accurately controlled, the possibility of electric injury is avoided, the rapid oscillation has a self-cleaning effect, and the adhesion between tissues and a knife is reduced.
The current ultrasonic surgical knife in market has its surgical instrument casing comprising outer casing and inner casing and knife rod inside the inner casing. The gaps between the inner sleeve and the outer sleeve and between the inner sleeve and the cutter bar are smaller. After a procedure is completed, blood or tissue fluid may enter the gap between the inner and outer cannulas or between the inner cannula and the knife bar because the gap is very small and long, and the blood or tissue fluid entering the gap is difficult to clean. Therefore, even if the structure and performance of the surgical instrument are still good, the surgical instrument cannot be reused again and can only be used as a disposable instrument, so the use cost is very high.
In order to reduce the operation cost of a patient, the ultrasonic knife needs to be repeatedly used for a plurality of times, but the abrasion between the clamping pad and the tissue to be cut is caused by front and back vibration along with the increase of operation times, so that the clamping force between the clamping pad and the tissue to be cut is reduced, the operation requirement cannot be met, the clamping pad cannot be replaced due to the fact that the existing ultrasonic knife head structure either adopts an integrated design with the clamping pad and the clamping arm, or the clamping pad and the clamping arm adopt a split type structure, but are required to be replaced together with the inner sleeve and the outer sleeve, the use cost is still high, the replacement process is complicated, the replacement efficiency of the tissue pad is not facilitated, the operation duration is influenced, and the operation risk is increased.
Disclosure of Invention
(1) Technical problem to be solved
The utility model provides a cutter head assembly and an ultrasonic knife for quickly replacing a tissue pad, which realize flexible disassembly of the tissue pad, reduce the medical burden of a patient, improve the operation efficiency and reduce the operation risk.
(2) Technical proposal
In a first aspect, embodiments of the present utility model provide a knife head assembly for rapid replacement of a tissue pad, comprising a knife head for clamping tissue to be cut in cooperation with the tissue pad; the inner sleeve is sleeved outside the cutter head; the outer sleeve is sleeved outside the inner sleeve, and the inner sleeve can reciprocate relative to the outer sleeve along the length direction of the inner sleeve; the clamping arm is detachably connected with the tissue pad, and one end, which is close to the outer sleeve, is rotatably connected with the outer sleeve; the clamping arm is further provided with a fixing block located inside the inner sleeve and an extrusion block located outside the inner sleeve, and the extrusion block extrudes the inner sleeve and drives the inner sleeve to move in the direction away from the cutter head when the clamping arm rotates around the outer sleeve, so that the fixing block is separated from the inner sleeve.
Further, an opening is formed in one end, close to the cutter head, of the inner sleeve, and the fixing block is arranged in the opening.
Further, the clamping arms are symmetrically provided with rotating shafts, the outer sleeve is provided with through holes, and the rotating shafts penetrate through the through holes.
Further, a clamping groove is formed in the clamping arm, and a clamping block matched with the clamping groove is arranged on the tissue pad.
Further, the opening is U-shaped.
Further, the clamping arm has a working state and a dismounting state, and when the clamping arm is in the working state, the fixed block is always positioned in the opening and is in contact with the inner sleeve; when the clamping arm is in a disassembled state, the fixing block is separated from the opening.
In a second aspect, embodiments of the present utility model also provide an ultrasonic blade comprising the blade assembly of the first aspect; an operating handle connected with the tool bit assembly; a transducer mounted on the operating handle at an end remote from the bit assembly; and a cable connected to one end of the transducer.
(3) Advantageous effects
In sum, through being equipped with fixed block and extrusion piece on the arm clamp, utilize the rotary motion drive extrusion piece of arm clamp to extrude the tip that is close to the tool bit on the interior sleeve pipe and drive interior sleeve pipe relative outer tube and remove for the fixed block that is located interior sleeve pipe breaks away from interior sleeve pipe, realizes the separation of arm clamp and interior sleeve pipe, has increased the rotation range of arm clamp, provides bigger space for the change of tissue pad, and simple structure and reliable and stable have not only realized dismantling the flexibility of tissue pad, also can reduce use cost because of only needing to change the tissue pad simultaneously, lighten patient's medical expenses, shorten the time of changing the tissue pad in the art, be favorable to improving operation efficiency and reduce the operation risk.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic view of the tool bit assembly of the present utility model.
Fig. 2 is a schematic view of the structure of the clamp arm of the present utility model after the clamp arm is disengaged from the inner sleeve.
Fig. 3 is a schematic view of another embodiment of the present utility model after the clamp arm is disengaged from the inner sleeve.
Fig. 4 is a schematic view of the ultrasonic blade of the present utility model.
In the figure:
1-a cutter head; 2-clamping arms; 21-a fixed block; 22-extruding a block; 23-clamping grooves; 3-tissue pad; 4-an outer sleeve; 41-through holes; 5-inner sleeve; 51-opening; 6-rotating shaft; 7-operating a handle; 8-transducers; 9-cable.
Detailed Description
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the utility model and are not intended to limit the scope of the utility model, i.e., the utility model is not limited to the embodiments described, but covers any modifications, substitutions and improvements in parts, components and connections without departing from the spirit of the utility model.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 and 2, the present utility model relates to a cutter head assembly for quick replacement of a tissue pad, comprising a cutter head 1, which cooperates with a tissue pad 3 to clamp tissue to be cut; the inner sleeve 5 is sleeved outside the cutter head 1; the outer sleeve 4 is sleeved outside the inner sleeve 5, and the inner sleeve 5 can reciprocate relative to the outer sleeve 4 along the length direction of the inner sleeve 5; the clamping arm 2 is detachably connected with the tissue pad 3, and one end close to the outer sleeve 4 is rotatably connected with the outer sleeve 4; the clamping arm 2 is also provided with a fixed block 21 positioned inside the inner sleeve 5 and a squeezing block 22 positioned outside the inner sleeve 5, and the squeezing block 22 squeezes the inner sleeve 5 and drives the inner sleeve 5 to move in a direction away from the cutter head 1 when the clamping arm 2 rotates around the outer sleeve 4 so that the fixed block 21 is separated from the inner sleeve 5.
According to the utility model, the fixed block and the extrusion block are arranged on the clamping arm, the extrusion block is driven by the rotary motion of the clamping arm to extrude the end part, close to the tool bit, of the inner sleeve pipe and drive the inner sleeve pipe to move relative to the outer sleeve pipe, so that the fixed block positioned in the inner sleeve pipe is separated from the inner sleeve pipe, the separation of the clamping arm and the inner sleeve pipe is realized, the rotation range of the clamping arm is enlarged, a larger space is provided for the replacement of a tissue pad, the structure is simple, stable and reliable, the flexible disassembly of the tissue pad is realized, meanwhile, the use cost is reduced due to the fact that only the tissue pad needs to be replaced, the medical cost of a patient is reduced, the time for replacing the tissue pad in operation is shortened, and the improvement of the operation efficiency and the reduction of the operation risk are facilitated.
As a preferred embodiment, as shown in fig. 1, an opening 51 is arranged at one end of the inner sleeve 5 near the cutter head 1, the fixing block 21 is arranged in the opening 51, the opening 51 is in a U shape or a V shape or other semi-closed shape, the fixing block 21 can be released from the opening 51, the opening 51 can be designed into any shape meeting the requirement, the clamping arm 2 has two modes of working state and dismounting state, when the clamping arm 2 is in the working state, namely, the clamping arm 2 rotates around the rotating shaft 6 to reduce and enlarge the included angle between the tissue pad 3 and the cutter head 1, so as to realize clamping and releasing of the tissue with cutting, when the clamping arm 2 is in the working state, the fixing block 21 is always positioned in the opening 51, namely, the fixing block 21 is not separated from the inner sleeve 5, and the fixing block 21 is always kept in contact with the inner sleeve 5, for ensuring that the inner sleeve 5 can reciprocate relative to the outer sleeve 4 under the drive of the operating handle 7 to drive the fixed block 21 to synchronously move along with the inner sleeve 5 so as to realize that the clamping arm 2 can rotate around the rotating shaft 6 for ensuring that the cutter head 1 clamps or releases tissue to be cut with the tissue pad 3, of course, the fixed block 21 can not always contact with the inner sleeve 5, namely, the fixed block 21 can not contact with the inner sleeve 5 when the fixed block 21 is arranged in the opening 51, but always contact with the fixed block 21 when the inner sleeve 5 generates relative movement relative to the outer sleeve 4, so as to drive the fixed block 21 to synchronously move so as to drive the clamping arm 2 to rotate around the rotating shaft 6, when the clamping arm 2 is in a disassembled state, namely, the cutter head 1 is removed in advance, thereby increasing the rotating angle of the clamping arm 2, leading the included angle between the tissue pad 3 and the horizontal line of the position of the cutter head 1 to be firstly reduced and then increased, until the fixing block 21 is separated from the opening 51, the fixing block 21 is not located in the opening 51 in the state that the clamp arm 2 is detached.
As another preferred embodiment, as shown in fig. 1-3, the clamping arms 2 are symmetrically provided with rotating shafts 6, the outer sleeve 4 is provided with two through holes 41, the two through holes 41 are respectively positioned at two sides of one end of the outer sleeve 4 near the tool bit 1, and the two rotating shafts 6 are arranged in the corresponding through holes 41 in a penetrating manner. The rotating shaft 6 may be integrally formed on the clamping arm 2 and symmetrically arranged, or the rotating shaft 6 may not be arranged on the clamping arm 2, but two corresponding through holes may be formed on the clamping arm 2 and the outer sleeve 4, and the independent rotating shaft is utilized to sequentially pass through the outer sleeve 4 and the through holes of the clamping arm 2, so as to realize the rotation connection of the clamping arm 2 and the outer sleeve 4.
As other alternative embodiments.
Preferably, as shown in fig. 3, the clamping arm 2 is provided with a clamping groove 23, and the tissue pad 3 is provided with a clamping block (not shown in the figure) adapted to the clamping groove 23. The assembly mode of the detachable connection between the clamping arm 2 and the tissue pad 3 is not limited to the conventional sliding connection mode, but may also include the existing modes of fastening, clamping, and the like, and as the detachable mode is the prior art, the connection mode of the clamping arm is not repeated as long as the detachable mode is the connection mode that the tissue pad can be detached from the clamping arm without damaging the clamping arm.
As shown in fig. 4, the present utility model further provides an ultrasonic knife, including the above-mentioned knife head assembly, and an operating handle 7 connected with the knife head assembly, where the operating handle 7 is used for controlling the inner sleeve 5 to reciprocate relative to the outer sleeve 4 along the length direction of the inner sleeve 5, and since the driving modes of the relative movement between the inner sleeve 5 and the outer sleeve 4 are all the prior art, the details are omitted here, a transducer 8 mounted on the operating handle 7 and far from one end of the knife head assembly, and a cable 9 connected with one end of the transducer 8, and the other end of the cable 9 is externally connected with a control host for the ultrasonic knife, so as to transmit electric energy.
To further illustrate the working principle of the present utility model, referring to fig. 1-3, the quick replacement process of the tissue pad 3 is illustrated, as shown in fig. 2, the cutter head 1 is firstly removed from the inner sleeve 5, then the clamping arm 2 rotates anticlockwise around the rotating shaft 6 to drive the extrusion block 22 to contact with one end of the inner sleeve 5 close to the cutter head 1 and to extrude the end surface, so that the inner sleeve 5 moves along the length direction thereof in a direction away from the clamping arm 2 until the fixing block 21 moves out of the opening 51 of the inner sleeve 5 and is separated from the opening 51, as shown in fig. 3, the inner sleeve 5 is removed from the outer sleeve 4, the clamping arm 2 rotates clockwise around the rotating shaft 6 to a certain angle, the tissue pad 3 is detached from the clamping arm 2, then a new tissue pad 3 is detachably connected to the clamping arm 2 again, then the inner sleeve 5 is reinserted to place the fixing block 21 on the clamping arm 2 into the opening 51 of the inner sleeve 5 again, and the cutter head 1 is reinserted again, so that is quickly replaced is achieved.
It should be understood that, in the present specification, each embodiment is described in an incremental manner, and the same or similar parts between the embodiments are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. The utility model is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known method techniques is omitted here for the sake of brevity.
The above description is only an example of the present utility model and is not limited to the present utility model. Various modifications and alterations of this utility model will become apparent to those skilled in the art without departing from the scope of this utility model. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.
Claims (7)
1. A cutter head assembly for rapid replacement of a tissue pad, comprising:
a cutter head (1) which is matched with the tissue pad (3) to clamp the tissue to be cut;
the inner sleeve (5) is sleeved outside the cutter head (1);
an outer sleeve (4) sleeved outside the inner sleeve (5), wherein the inner sleeve (5) can reciprocate relative to the outer sleeve (4) along the length direction of the inner sleeve;
the clamping arm (2) is detachably connected with the tissue pad (3), and one end, which is close to the outer sleeve (4), is rotatably connected with the outer sleeve (4);
still be equipped with on the arm (2) and be located fixed block (21) and being located inside interior sleeve pipe (5) outside extrusion piece (22) of interior sleeve pipe (5), extrusion piece (22) are in when arm (2) are around outside sleeve pipe (4) are rotary motion extrusion interior sleeve pipe (5) and drive interior sleeve pipe (5) are kept away from tool bit (1) direction motion makes fixed block (21) with interior sleeve pipe (5) break away from.
2. The cutter head assembly for quick change of tissue pads according to claim 1, wherein an opening (51) is provided in the inner sleeve (5) at an end adjacent to the cutter head (1), and the fixing block (21) is provided in the opening (51) and is in contact with the inner sleeve (5).
3. The cutter head assembly for rapidly replacing tissue mats according to claim 1, wherein the clamping arms (2) are symmetrically provided with rotating shafts (6), the outer sleeve (4) is provided with through holes (41), and the rotating shafts (6) are arranged in the through holes (41) in a penetrating mode.
4. The cutter head assembly for quick replacement of tissue pads according to claim 1, characterized in that the clamping arm (2) is provided with a clamping groove (23), and the tissue pad (3) is provided with a clamping block matched with the clamping groove (23).
5. The cutter head assembly for rapid exchange of tissue pads according to claim 2, wherein the opening (51) is U-shaped.
6. The knife head assembly for quick change of tissue pads according to claim 2, characterized in that the clamping arm (2) has an operative state and a disassembled state;
when the clamping arm (2) is in an operating state, the fixed block (21) is always positioned in the opening (51) and is in contact with the inner sleeve (5);
when the clamping arm (2) is in a disassembled state, the fixing block (21) is separated from the opening (51).
7. An ultrasonic blade comprising the blade assembly of any of claims 1-6, further comprising:
an operating handle (7) connected with the tool bit assembly;
a transducer (8) mounted on the operating handle (7) at an end remote from the cutter head assembly;
and a cable (9) connected to one end of the transducer (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321220868.3U CN220158347U (en) | 2023-05-19 | 2023-05-19 | Cutter head assembly for quickly replacing tissue pad and ultrasonic cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321220868.3U CN220158347U (en) | 2023-05-19 | 2023-05-19 | Cutter head assembly for quickly replacing tissue pad and ultrasonic cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220158347U true CN220158347U (en) | 2023-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321220868.3U Active CN220158347U (en) | 2023-05-19 | 2023-05-19 | Cutter head assembly for quickly replacing tissue pad and ultrasonic cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220158347U (en) |
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2023
- 2023-05-19 CN CN202321220868.3U patent/CN220158347U/en active Active
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