CN109846531B - Suction catheter for hysteromyectomy - Google Patents
Suction catheter for hysteromyectomy Download PDFInfo
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- CN109846531B CN109846531B CN201910139371.0A CN201910139371A CN109846531B CN 109846531 B CN109846531 B CN 109846531B CN 201910139371 A CN201910139371 A CN 201910139371A CN 109846531 B CN109846531 B CN 109846531B
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- 239000003814 drug Substances 0.000 claims description 49
- 239000002184 metal Substances 0.000 claims description 4
- 239000003086 colorant Substances 0.000 claims description 3
- 206010061692 Benign muscle neoplasm Diseases 0.000 abstract description 55
- 201000004458 Myoma Diseases 0.000 abstract description 55
- 206010020718 hyperplasia Diseases 0.000 abstract description 3
- 210000000056 organ Anatomy 0.000 abstract description 3
- 238000002271 resection Methods 0.000 abstract 1
- 208000037062 Polyps Diseases 0.000 description 9
- 206010046798 Uterine leiomyoma Diseases 0.000 description 8
- 201000010260 leiomyoma Diseases 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 210000002460 smooth muscle Anatomy 0.000 description 5
- 210000001519 tissue Anatomy 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
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- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
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- 201000007954 uterine fibroid Diseases 0.000 description 1
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Abstract
The invention discloses an aspiration catheter for hysteromyectomy, which is characterized in that: the guide part is communicated with the cavity of the cutting part, the end part of the guide part is connected with a guide pipe, and the tail end of the guide pipe is connected with a negative pressure machine; the cutting part is a spherical cavity, an infrared sensor is arranged on the inner layer of the cutting part, and the infrared sensor is connected to the microprocessor; the inner layer of the excision part is a cavity wall with adjustable diameter formed by snake bones, all the snake bones are distributed in the warp direction and are enclosed into a ball cavity, the tail end of each snake bone is provided with an adjusting wire, the bottom surface of the rear section of each snake bone is a cutting edge, the lower part of the rear section of each snake bone is provided with a rotary cutting ring, and the rotary cutting ring and the bottom surface of the rear section of each snake bone form a cutting surface. The suction catheter solves the problem that a doctor cannot remove cleanly due to the use of a scalpel or a surgical scissors, and avoids hyperplasia recurrence caused by remaining myoma; the resected myoma is directly discharged out of the affected part by using the guide part, the catheter and the negative pressure machine, so that the myoma after the resection is prevented from sliding to other organs due to untimely treatment.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to an aspiration catheter for hysteromyectomy.
Background
Uterine fibroids are one of the most common benign tumors in female reproductive organs, and also one of the most common tumors in the human body, also called fibromyomas, uterine fibroids; uterine fibroids are also known as uterine leiomyomas, since they are mainly formed by hyperplasia of uterine smooth muscle cells, in which a small amount of fibrous connective tissue is present as a supporting tissue.
For the treatment of hysteromyoma, there are follow-up observation, drug treatment and surgical treatment commonly used in the prior art, wherein the surgical treatment takes the fastest effect, and most patients can recover only through myomectomy and healthy post-treatment, and the myomectomy can help the patients to keep uterus. Myomectomy is performed by removing myoma through abdomen, and removing by using a surgical knife or a surgical scissors; however, the myoma can not be completely removed by using a scalpel or a pair of surgical scissors, and even normal smooth muscle can be possibly injured; because the myoma is a small polyp at most during operation, when a doctor uses a surgical knife or a surgical scissors, the doctor cannot completely form a vertical angle between the surgical knife or the surgical scissors and the root of the polyp, the excision angle is difficult to adjust, and the myoma can only be removed by adopting oblique cutting or oblique shearing, after the myoma is removed for the first time, some residual myoma which cannot be removed by oblique cutting or oblique shearing is always left, and the rest myoma is difficult to remove, and only treatment can be carried out through medicines; if the recovery of the patient is poor, the patient is easy to cause recurrent hyperplasia, and the pain and economic expenditure of the patient are increased.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to provide an aspiration catheter for hysteromyoma excision, which can thoroughly excise hysteromyoma.
The aim of the invention is achieved by the following technical scheme.
The suction catheter for hysteromyectomy comprises a guide part, an excision part and an operation part, wherein the guide part and the excision part are respectively arranged into a cavity, the guide part is communicated with the cavity of the excision part, and the cavities respectively comprise an inner layer, an outer layer and a hollow part positioned between the inner layer and the outer layer; the end part of the guiding part is connected with a guide pipe, and the tail end of the guide pipe is connected with a negative pressure machine; the operation part is independent of the guide part and the cutting part, and a microprocessor is arranged in the operation part;
the cutting part is a spherical cavity, the opposite direction of the inner layer of the cutting part is sequentially provided with infrared sensors from bottom to top, the end parts of the infrared sensors are arranged on the inner wall of the outer layer through a fixed structure, and the output lines of the infrared sensors are connected to the microprocessor through the hollow part;
the inner layer of the excision part is a cavity wall with adjustable diameter formed by snake bones, all the snake bones are distributed in the warp direction and are enclosed into a ball cavity, the tail ends of the snake bones are provided with adjusting wires, all the adjusting wires are gathered together, and the gathered adjusting wires pass through the hollow part and are connected with an adjusting switch; the bottom surface of the rear section of the snake bone is a cutting edge, the lower part of the rear section of the snake bone is provided with a rotary cutting ring, and the rotary cutting ring and the bottom surface of the rear section of the snake bone form a cutting surface;
the cutting part is provided with a sliding rail which is a circular rail, the rotating ring cutter is arranged on the sliding rail, any point on the rotating ring cutter is provided with a rotating line, a rotating line rail is arranged above the rotating ring cutter, the rotating line rail is a semicircular rail, the starting point of the rotating line rail is positioned above the point of the rotating ring cutter where the rotating line is arranged, the semicircular tail end of the rotating line rail is provided with a wire block, and the wire block is provided with a perforation; the rotating line track comprises a slideway with a chute in the middle and a sliding block arranged in the slideway, wherein the sliding block comprises an A block with a through hole and a B block with a size larger than that of the chute opening, and the A block is fixedly connected with the B block; the rotating wire sequentially passes through the sliding block, the wire guide block and the hollow part to be connected with a cut-off switch, a reset tension spring is arranged between the rotating ring cutter and the sliding rail, and two ends of the reset tension spring are respectively connected with the rotating ring cutter and the sliding rail.
An auxiliary layer is arranged outside the outer layers of the guide part and the cutting part, an auxiliary hollow part is arranged between the auxiliary layer and the outer layer, a medicine feeding pipe and an air suction pipe are arranged in the auxiliary hollow part, the bottom end of the medicine feeding pipe is communicated with the bottom end of the cutting part, and the top end of the medicine feeding pipe is connected with a medicine delivery device; the bottom of the air suction pipe is communicated with the bottom of the cutting part, and the top of the air suction pipe is connected with the negative pressure machine.
The medicine feeding device comprises a positive pressure machine, the top end of a medicine feeding pipe is connected with the positive pressure machine, a medicine feeding port is formed in the upper portion of the medicine feeding pipe, a one-way plate is arranged at the medicine feeding port, and a check valve is arranged in the medicine feeding pipe.
The bottom of excision portion is provided with pressure sensor, and pressure sensor is connected with microprocessor.
The display lamp is arranged on the operation part and connected with the microprocessor, and the display lamp can display at least two colors.
The guide part and the cutting part are made of metal.
The beneficial effects of the invention are as follows: according to the suction catheter provided by the invention, the spherical cavity enclosed by the snake bone and the rotary cutting ring which forms the cutting surface with the bottom end of the spherical cavity are arranged in the cutting part, the outline of the myoma (polyp) is detected by matching with the infrared sensor, after the detection is finished, the snake bone and the rotary cutting ring are operated, and the suction catheter is cut off from the root of the myoma (polyp), so that the problem that a doctor cannot cleanly remove the myoma (polyp) due to the use of a surgical knife or a surgical scissors is solved, and the residual myoma (polyp) is avoided; the myoma (polyp) after extirpation is directly discharged out of the affected part by utilizing the guide part and the negative pressure machine, so that the myoma (polyp) after extirpation is prevented from sliding to other organs due to untimely treatment; the suction catheter is provided with a medicine feeding tube, after the removed myoma (polyp) is discharged out of the affected part, the affected part can be immediately fed with medicine through the medicine feeding tube, so that infection caused by delay time is avoided; during operation, redundant blood can be sucked out through the air suction pipe, so that doctors can observe the affected part, and the operation is better performed.
Drawings
Fig. 1 is a schematic diagram of the initial state of the structure of the first embodiment.
Fig. 2 is a partially enlarged view of the cut-away portion of the first embodiment.
Fig. 3 is a partial enlarged view of a rotary cutter and a slide rail according to the first embodiment.
Fig. 4 is a partially enlarged view of the rotation line track of the first embodiment.
Fig. 5 is a top view of a rotation line track of the first embodiment.
Fig. 6 is a schematic view of an infrared sensor according to the first embodiment.
Fig. 7 is a schematic view of a structure cut state of the first embodiment.
Fig. 8 is a schematic structural diagram of the second embodiment.
Fig. 9 is a schematic view of the structure of a drug feeding tube according to the second embodiment.
In the figure, 1 is a guide part, 2 is a cut-out part, 3 is an operation part, 4 is an inner layer, 5 is an outer layer, 6 is a hollow part, 7 is an infrared sensor, 8 is a snake bone, 9 is a rotary ring cutter, 10 is an adjusting wire, 11 is an auxiliary layer, 12 is an auxiliary hollow part, 13 is a medicine feeding pipe, 14 is an air suction pipe, 15 is a medicine feeding port, 16 is a one-way plate, 17 is a check valve, 18 is myoma, 19 is smooth muscle, 20 is a guide pipe, 21 is a slide rail, 22 is a rotary wire, 23 is a rotary wire track, 24 is a slide rail, 25 is a slide block, 26 is a reset tension spring, 27 is an A block, 28 is a B block, and 29 is a wire block.
Detailed Description
Example 1
As shown in fig. 1 to 4, an aspiration catheter for hysteromyectomy is used in operation of removing hysteromyoma, and comprises a guiding part 1, an excision part 2 and an operation part 3, wherein the guiding part 1 and the excision part 2 are made of metal, the operation part 3 is arranged independent of the guiding part 1 and the excision part 2, a microprocessor is arranged in the operation part 3, and the microprocessor is used for receiving a detection signal of an infrared sensor 7 and judging and identifying the contour of myoma 18 according to a preset program.
The operation part 3 is provided with a display lamp which is connected with the microprocessor, the display lamp can display two colors, the initial color is red, the working color is green, and when the microprocessor judges the outline of the myoma 18 and can remove the myoma 18, the microprocessor controls the display lamp to change from red to green, so that a doctor is prompted to perform the removal action. Microprocessor technology is well known to those of ordinary skill in the art.
The guide part 1 and the cutting part 2 are both arranged into cavities, the cutting part 2 is communicated with the cavity of the guide part 1, the cavities comprise an inner layer 4, an outer layer 5 and a hollow part 6 positioned between the inner layer 4 and the outer layer 5, the end part of the guide part 1 is connected with a guide pipe 20, the guide pipe 20 is a hose, the length of the guide pipe can be determined according to the site condition, and the guide pipe 20 is connected to a negative pressure machine. Wherein, the negative pressure machine is the prior art.
The guide part 1 is connected with the catheter 20, the catheter 20 is connected with a negative pressure machine for sucking out the myoma after the extirpation, and the excision part 2 is used for extirpating the myoma 18.
The cutting part 2 is a ball cavity, the inner layer 4 of the cutting part 2 is provided with infrared sensors 7 in opposite directions from bottom to top in sequence, the end parts of the infrared sensors 7 are arranged on the inner wall of the outer layer 5 through a fixed structure, and the infrared sensors 7 are connected with a microprocessor; the infrared sensor 7 is used for detecting the diameter of the myoma 18 entering the excision 2, the outline of the myoma 18 can be obtained by comprehensively detecting the infrared sensors 7 of different layers, and when the diameter of the myoma 18 is reduced from the maximum position to the position of 0.5mm-1mm, the microprocessor recognizes the position as the root of the myoma 18 according to the detection signal of the infrared sensor 7. The output line of the infrared sensor 7 is connected to the microprocessor via the hollow 6.
The outer layer of the cutting part 2 is made of metal, is a hardware shell, the inner layer 4 is a cavity wall with adjustable diameter formed by snake bones 8, and the snake bones 8 are common technical means in medical instruments. All snake bones 8 are distributed in the warp direction and enclose a ball cavity. The tail end of the snake bone 8 is provided with an adjusting wire 10, and the adjusting wire 10 is used for pulling the tail end of the snake bone 8 to shrink; all the adjustment wires 10 are gathered together, the gathered adjustment wires 10 pass through the hollow part 6 and then are connected to an adjusting switch, the adjusting switch can be also arranged on the operation part 3, the adjusting switch is an adjusting handle, and the gathered adjustment wires 10 can be pulled, so that the opening and closing of all the snake bones 8 at the tail end are adjusted, and the diameter of the inner layer cavity is adjusted. The structure of the snake bone 8 can be the structure described in CN201310679858.0, and the structure and principle of the snake bone will not be described in detail in the present invention. Wherein, the detection surface position of the infrared sensor 7 and the internal layer surface where the snake bone 8 is positioned are the same internal layer surface, the two layers are not mutually interfered, and when the snake bone 8 is arranged, the installation position of the infrared sensor 7 is reserved.
The bottom surface of the rear section of the inner layer snake bone 8 is a cutting edge, a rotary cutting ring 9 is arranged at the lower part of the rear section of the snake bone 8, the diameter of the rotary cutting ring 9 is slightly smaller than the bottom diameter of the cutting part 2, the myoma 18 is biological tissue and has elasticity, and the larger myoma 18 can penetrate through the rotary cutting ring 9 by utilizing the biological characteristics of the myoma. The rotary cutting ring 9 and the bottom surface of the back section of the snake bone 8 form a cutting surface.
The cutting part 2 is provided with a slide rail 21, the rotary cutting ring 9 is arranged in the slide rail 21, and the rotary cutting ring 9 always rotates on the slide rail 21 when the myoma 18 is cut. The rotary cutting ring 9 is provided with a rotary wire 22 at any point, a rotary wire rail 23 is provided above the rotary cutting ring 9, the rotary wire 22 is connected with a cut-off switch through the rotary wire rail 23 and the hollow part 6, and the cut-off switch can be also arranged on the operation part 3.
The rotating line track 23 is a semicircular track, and the starting point of the rotating line track 23 is located above the point where the rotating ring cutter 9 is provided with the rotating line 22, so that the sliding block 25 on the rotating line track 23 is synchronous with the rotation of the rotating ring cutter 9. The semicircular end of the turning wire track 23 is provided with a wire block 29, and the wire block 29 is provided with a through hole, and the turning wire 22 passes through the wire block 29 to ensure that a force in a horizontal direction required for circumferential rotation is applied to the sliding block 25, so that the sliding block 25 can perform a circumferential movement. The rotation line track 23 comprises a slideway 24 with a chute in the middle and a sliding block 25 arranged in the slideway 24, wherein the sliding block 25 comprises an A block 27 with a through hole and a B block 28 with a size larger than that of a chute opening, and the A block 27 is fixedly connected with the B block 28; the rotating wire 22 sequentially passes through the sliding block 25, the conducting wire block 29 and the hollow part 6 to be connected with a cut-off switch; when the cut-off switch is operated, the rotating wire 22 is pulled, the rotating wire 22 is arranged in the A block and the conducting wire block 29, the sliding block 25 can relatively slide, the conducting wire block 29 is fixed, the A block of the sliding block 25 is acted by the rotating wire 22, the sliding block 25 is forced to move in a slideway to do circular motion, the rotating wire track 23 is a semicircular track, the sliding block 25 is forced to do semicircular motion, the rotating wire 22 drives the rotating ring cutter 9 to start rotating, the rotating ring cutter 9 is acted by the combined action of the rotating wire 22 and the rotating wire track 23, the rotating ring cutter 9 performs circular motion, the rotating ring cutter 9 performs relative motion on the myoma 18 due to the fact that the snake bone 8 does not rotate, the myoma 18 is cut, and the cut myoma 18 is discharged out of an affected part through the guide part 1 and the guide pipe 20 under the action of negative pressure generated by the negative pressure machine.
A reset tension spring 26 is arranged between the rotary cutting ring 9 and the sliding rail 21, and two ends of the reset tension spring 26 are respectively connected with the rotary cutting ring 9 and the sliding rail 21. After the rotary cutting ring 9 is pulled by the rotary wire 22 to move the semicircle, the cut-off switch is operated (i.e. the cut-off switch is not operated any more), and the rotary cutting ring 9 returns to the original position under the action of the return tension spring 26.
The working mode of the embodiment is as follows: when a doctor performs an operation, the suction catheter is slowly sleeved on the myoma 18, the excision part 2 is a cavity and is easy to cover the myoma 18, in the process that the excision part 2 is slowly sleeved on the myoma 18, the infrared sensor 7 on the inner layer of the excision part 2 detects the distance between the infrared sensor 7 and the surface of the myoma 18 in real time, the myoma 18 is in a shape with big top and small bottom, and the signal value detected by the infrared sensor 7 also changes correspondingly; the infrared sensor 7 positioned at the lowest layer starts to detect the distance signal at first, the rest of the infrared sensors 7 sequentially detect the signals, the signals detected by the infrared sensors 7 at the lowest layer change along with the shape of the myoma 18 according to the change of the shape of the myoma 18 until the maximum distance is detected (namely the minimum position of the myoma), the microprocessor judges that the position is the root of the myoma 18 according to a preset program, and the microprocessor controls the display lamp on the operation part 3 to change color from red to green so as to prompt a doctor to start the removal action.
When the suction catheter is placed in place, the display lamp turns green, a doctor operates the regulating switch, the regulating wire 10 after the regulating switch is tensioned, the regulating wire 10 pulls the rear sections of the snake bones 8, the rear sections of the snake bones 8 are tightened, the diameters of ball cavities formed by the snake bones 8 are reduced, the myoma 18 is tightened at the rear sections of the snake bones 8, certain deformation of the myoma 18 can occur due to the biological tissue characteristics of the myoma 18, the myoma is equivalent to the myoma 18, the myoma is not displaced, and the myoma 18 is conveniently cut by the rotary cutter 9. Operating the excision switch, and pulling the rotary cutting ring 9 by the rotary wire 22 to perform semicircular rotation, wherein the rotary cutting ring 9 cuts the myoma 18 in the rotating process, so that the myoma 18 is excised; then, the negative pressure machine is turned on, negative pressure is generated by the negative pressure machine, and the resected myoma 18 is discharged to the affected part through the guide part 1 and the catheter 20. Wherein the inner blade of the rotary cutting ring 9 is as sharp as a general surgical knife, which is very easy to cut biological tissue.
Example two
As shown in fig. 8-9, unlike the first embodiment, an auxiliary layer 11 is arranged outside the outer layer 5 of the guiding part 1 and the cutting part 2, an auxiliary hollow part 12 is arranged between the auxiliary layer 11 and the outer layer 5, a medicine feeding pipe 13 and an air suction pipe 14 are arranged in the auxiliary hollow part 12, the bottom end of the medicine feeding pipe 13 is communicated with the bottom end of the cutting part 2, and the top end of the medicine feeding pipe 13 is connected with a medicine delivery device; the bottom end of the air suction pipe 14 is communicated with the bottom end of the cutting part 2, and the top end of the air suction pipe 14 is connected with a negative pressure machine.
The medicine feeding device comprises a positive pressure machine, the top end of a medicine feeding pipe 13 is connected with the positive pressure machine, a medicine feeding port 15 is arranged on the upper portion of the medicine feeding pipe 13, a one-way plate 16 is arranged at the medicine feeding port 15, and a check valve 17 is arranged in the medicine feeding pipe 13.
The working mode of the embodiment is as follows: the procedure for resecting myoma 18 is the same as in example one, except that during the procedure, if more blood is found in the affected area, the physician operates the negative pressure machine to create a certain amount of negative pressure (without injuring normal biological tissues), and the blood in the affected area is sucked away through suction tube 14, so that the physician can perform the procedure better.
After the myoma 18 after the extirpation is sucked away, a doctor adds the medicine to be coated on the affected part into the medicine feeding pipe 13 through the medicine adding port 15, the medicine falls on the check valve 17 in the medicine feeding pipe 13, the check valve 17 is required to be opened by a certain acting force, and the one-way plate 16 at the medicine adding port 15 is used for preventing the medicine from being blown out of the medicine feeding pipe 13 when the medicine is fed; the doctor operates the positive pressure machine to blow air to the medicine feeding pipe 13, the air force blows the check valve 17, and the medicine is sent to the affected part through the bottom opening of the cutting part 2 under the action of the air force of the positive pressure machine, so that a certain amount of coating is carried out on the affected part. Wherein, the positive pressure machine is subjected to medical treatment. The remainder was the same as in example one.
Example III
Unlike the first embodiment, the present embodiment is provided with a pressure sensor at the bottom end of the cutout portion 3, the pressure sensor being connected to a microprocessor.
When the ablation portion 3 is fully placed on the smooth muscle 19, the pressure sensor is in contact with the smooth muscle 19 to generate pressure and transmit a pressure signal value to the microprocessor, and the microprocessor determines that the ablation portion 2 is fully placed on the smooth muscle 19 according to the value of the pressure sensor, so that the doctor can start the ablation action. The remainder was the same as in example one.
While the invention has been described in terms of preferred embodiments, it will be understood that the invention is not limited thereto, but rather, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the scope of the invention.
Claims (6)
1. An aspiration catheter for hysteromyectomy, characterized by: the suction catheter comprises a guide part (1), a cutting part (2) and an operation part (3), wherein the guide part (1) and the cutting part (2) are respectively arranged into cavities, the guide part (1) is communicated with the cavity of the cutting part (2), and the cavities respectively comprise an inner layer (4), an outer layer (5) and a hollow part (6) positioned between the inner layer (4) and the outer layer (5); the end part of the guide part (1) is connected with a guide pipe (20), and the tail end of the guide pipe (20) is connected with a negative pressure machine; the operation part (3) is arranged independently of the guide part (1) and the cutting part (2), and a microprocessor is arranged in the operation part (3);
the cutting part (2) is a spherical cavity, the inner layer (4) of the cutting part (2) is provided with infrared sensors (7) in sequence from bottom to top in the opposite direction, the end parts of the infrared sensors (7) are arranged on the inner wall of the outer layer (5) through a fixed structure, and the output line of the infrared sensors (7) is connected to the microprocessor through the hollow part (6);
the inner layer (4) of the cutting part (2) is a cavity wall with adjustable diameter formed by snake bones (8), all the snake bones (8) are distributed in the warp direction and enclose a ball cavity, the tail end of each snake bone (8) is provided with an adjusting wire (10), all the adjusting wires (10) are gathered together, and the gathered adjusting wires (10) are connected with an adjusting switch after passing through the hollow part (6); the bottom surface of the rear section of the snake bone (8) is a cutting edge, the lower part of the rear section of the snake bone (8) is provided with a rotary cutting ring (9), and the rotary cutting ring (9) and the bottom surface of the rear section of the snake bone (8) form a cutting surface;
the cutting part (2) is provided with a sliding rail (21), the sliding rail (21) is a circular rail, the rotary cutting ring (9) is arranged on the sliding rail (21), any point on the rotary cutting ring (9) is provided with a rotary line (22), a rotary line track (23) is arranged above the rotary cutting ring (9), the rotary line track (23) is a semicircular track, the starting point of the rotary line track (23) is positioned above the point of the rotary cutting ring (9) where the rotary line (22) is arranged, the semicircular tail end of the rotary line track (23) is provided with a wire block (29), and the wire block (29) is provided with a perforation; the rotating line track (23) comprises a slideway (24) with a chute in the middle, and a sliding block (25) arranged in the slideway (24), wherein the sliding block (25) comprises an A block (27) with a through hole and a B block (28) with a size larger than that of a chute opening, and the A block (27) is fixedly connected with the B block (28); the rotating wire (22) sequentially passes through the sliding block (25), the wire block (29) and the hollow part (6) to be connected with a cut-off switch, a reset tension spring (26) is arranged between the rotating cutting ring (9) and the sliding rail (21), and two ends of the reset tension spring (26) are respectively connected with the rotating cutting ring (9) and the sliding rail (21).
2. The aspiration catheter for hysteromyectomy according to claim 1, wherein: an auxiliary layer (11) is arranged outside the outer layer (5) of the guide part (1) and the cutting part (2), an auxiliary hollow part (12) is arranged between the auxiliary layer (11) and the outer layer (5), a medicine feeding pipe (13) and an air suction pipe (14) are arranged in the auxiliary hollow part (12), the bottom end of the medicine feeding pipe (13) is communicated with the bottom end of the cutting part (2), and the top end of the medicine feeding pipe (13) is connected with a medicine delivery device; the bottom end of the air suction pipe (14) is communicated with the bottom end of the cutting part (2), and the top end of the air suction pipe (14) is connected with a negative pressure machine.
3. The aspiration catheter for hysteromyectomy according to claim 2, wherein: the medicine feeding device comprises a positive pressure machine, the top end of a medicine feeding pipe (13) is connected with the positive pressure machine, a medicine feeding port (15) is arranged on the upper portion of the medicine feeding pipe (13), a one-way plate (16) is arranged at the medicine feeding port (15), and a check valve (17) is arranged in the medicine feeding pipe (13).
4. The aspiration catheter for hysteromyectomy according to claim 1 or 2, wherein: the bottom of the cutting part (2) is provided with a pressure sensor which is connected with a microprocessor.
5. The aspiration catheter for hysteromyectomy according to claim 1 or 2, wherein: the operation part (3) is provided with a display lamp which is connected with the microprocessor and can display at least two colors.
6. The aspiration catheter for hysteromyectomy according to claim 1 or 2, wherein: the guide part (1) and the cutting part (2) are made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910139371.0A CN109846531B (en) | 2019-02-26 | 2019-02-26 | Suction catheter for hysteromyectomy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910139371.0A CN109846531B (en) | 2019-02-26 | 2019-02-26 | Suction catheter for hysteromyectomy |
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| Publication Number | Publication Date |
|---|---|
| CN109846531A CN109846531A (en) | 2019-06-07 |
| CN109846531B true CN109846531B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910139371.0A Active CN109846531B (en) | 2019-02-26 | 2019-02-26 | Suction catheter for hysteromyectomy |
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| CN (1) | CN109846531B (en) |
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| CN111297453B (en) * | 2020-03-25 | 2021-10-08 | 中国人民解放军陆军特色医学中心 | Hysteromyoma rotary cutter |
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