CN216090668U - Knife for operation of fibrous ring - Google Patents
Knife for operation of fibrous ring Download PDFInfo
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- CN216090668U CN216090668U CN202122279948.3U CN202122279948U CN216090668U CN 216090668 U CN216090668 U CN 216090668U CN 202122279948 U CN202122279948 U CN 202122279948U CN 216090668 U CN216090668 U CN 216090668U
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Abstract
The utility model relates to the field of medical equipment surgery, in particular to a knife for a fiber ring surgery, which comprises a knife head and a knife handle, wherein the knife head comprises a longitudinal cutter, a first transverse cutter, a second transverse cutter, a knife holder and a connecting part, the lower end of the knife handle is installed with the connecting part, the knife holder is fixedly installed at the lower end of the connecting part, the longitudinal cutter is fixed at the lower side of the knife holder, and the outline of the longitudinal cutter is a curve which protrudes outwards downwards. The utility model has reasonable and compact structure and ingenious conception, and the skin of a patient is incised by the longitudinal cutter when the operation is started to complete the exposure of the operation area; when the nucleus pulposus is removed in the operation, the fibrous ring is cut through the longitudinal cutter, the first transverse cutter and the second transverse cutter, so that the cross-shaped incision is completed at one time, and the phenomenon that the edges of the incision of the fibrous ring are uneven due to the repeated operation of replacing the scalpel is avoided; the toughness or calcification condition of the nucleus pulposus tissue of the intervertebral is mastered by rotating the swinging cutter head, and the intervertebral disc nucleus pulposus tissue has the characteristics of rapidness, high efficiency and simple operation.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a knife for a fibrous ring operation.
Background
In clinical work, particularly in minimally invasive surgery or spinal endoscopic surgery, spinal surgeons typically need to dissect the annular annulus fibrosis tissue to further remove the disc and nucleus pulposus tissue during a lumbar discectomy procedure. The skin is cut into a cross incision by the transverse and vertical knives of the scalpel, so that the phenomenon that the incision is irregular due to intermittent extrusion when nucleus pulposus pincers are placed in the incision in the later period is avoided. Because the width and depth of the cross-shaped incision are different from those of the transverse incision and the vertical incision, the nerve function at the distal end of the operation area of the patient is damaged or even paraplegia is caused by cutting multiple times or accidentally injuring important tissues of the spinal cord, nerve roots and the like of the patient in the operation process, and the situations are particularly caused when the experience of an operator is inexperienced.
Disclosure of Invention
The utility model provides a knife for a fiber ring surgery, overcomes the defects of the prior art, and can effectively solve the problem that the prior scalpel cannot cut a cross-shaped incision at one time.
The technical scheme of the utility model is realized by the following measures: a knife for a fiber ring surgery comprises a knife head and a knife handle, wherein the knife head comprises a longitudinal cutter, a first transverse cutter, a second transverse cutter, a knife holder and a connecting part; a first transverse cutter is arranged on the left side of the longitudinal cutter, the outer contour of the first transverse cutter is a curve which protrudes outwards towards the lower left side, an arc-shaped blade is arranged on the outer side of the left part of the first transverse cutter, the upper end of the first transverse cutter is fixedly installed with the lower side of the cutter holder, and the right side of the first transverse cutter is fixedly installed with the left side of the longitudinal cutter; the right-hand second transverse cutter that is equipped with of longitudinal cutter, the outline of second transverse cutter is the curve of evagination below the right side, and the outside of second transverse cutter right part is equipped with the arc sword, and second transverse cutter upper end and blade holder downside fixed mounting are in the same place, and second transverse cutter left side and longitudinal cutter right side fixed mounting are in the same place.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the height of the longitudinal cutter is a first height, the width of the longitudinal cutter is a first width, and the first height is larger than the first width; the height of the first transverse cutter is a second height, the width of the first transverse cutter is a second width, and the second height is larger than the second width; the height of the second transverse cutter is a third height, the width of the second transverse cutter is a third width, and the third height is larger than the third width.
The first height is between 6mm and 12mm, the height difference between the first height and the second height is between 1mm and 4mm, and the height difference between the first height and the third height is between 1mm and 4 mm.
The first width is between 5mm and 10mm, the first width is 1.5 to 2 times of the second width, and the first width is 1.5 to 2 times of the third width.
The outer contour of the longitudinal cutter is in a semi-ellipse shape, a parabola shape or a similar semi-ellipse shape, the outer contour of the first transverse cutter is in a quarter-ellipse shape, a descending curve shape or an index function shape, and the outer contour of the second transverse cutter is in a quarter-ellipse shape, an ascending curve shape or an index function shape.
The knife handle comprises an upper straight rod, a middle cross rod and a lower straight rod, the lower end of the upper straight rod is fixedly installed with the left end of the middle cross rod, and the right end of the middle straight rod is fixedly installed with the upper end of the lower straight rod; the lower end of the lower straight rod is detachably and fixedly arranged together with the connecting part.
The utility model has reasonable and compact structure and ingenious conception, and the skin of a patient is incised by the longitudinal cutter when the operation is started to complete the exposure of the operation area; when the nucleus pulposus is removed in the operation, the fibrous ring is cut through the longitudinal cutter, the first transverse cutter and the second transverse cutter, so that the cross-shaped incision is completed at one time, and the phenomenon that the edges of the incision of the fibrous ring are uneven due to the repeated operation of replacing the scalpel is avoided; the longitudinal cutter, the first transverse cutter and the second transverse cutter adopt arc structures, so that nerve damage caused by visual field shielding can be avoided; the toughness or calcification condition of the nucleus pulposus tissue of the intervertebral is mastered by rotating the swinging cutter head, and the intervertebral disc nucleus pulposus tissue has the characteristics of rapidness, high efficiency and simple operation.
Drawings
Fig. 1 is a schematic front view of the preferred embodiment of the present invention.
Fig. 2 is a front enlarged view of the cutter head shown in fig. 1.
Fig. 3 is a left side view of the structure of fig. 2.
The codes in the figures are respectively: 1 is a longitudinal cutter, 2 is a first transverse cutter, 3 is a second transverse cutter, 4 is a cutter holder, 5 is a connecting part, 6 is an upper straight rod, 7 is a middle cross rod, 8 is a lower straight rod, h1Is a first height, h2Is a second height, h3Is a third height, b1Is a first width, b2Is a second width, b3Is the third width.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The utility model is further described with reference to the following examples and figures:
as shown in the attached drawings 1, 2 and 3, the knife for the fiber ring surgery comprises a knife head and a knife handle, wherein the knife head comprises a longitudinal cutting knife 1, a first transverse cutting knife 2, a second transverse cutting knife 3, a knife holder 4 and a connecting part 5, the lower end of the knife handle is installed with the connecting part 5, the knife holder 4 is fixedly installed at the lower end of the connecting part 5, the longitudinal cutting knife 1 is fixed at the lower side of the knife holder 4, the outline of the longitudinal cutting knife 1 is a curve which protrudes downwards and outwards, and an arc-shaped edge is arranged at the outer side of the longitudinal cutting knife 1; a first transverse cutter 2 is arranged on the left side of the longitudinal cutter 1, the outer contour of the first transverse cutter 2 is a curve which protrudes outwards towards the lower left side, an arc-shaped blade is arranged on the outer side of the left part of the first transverse cutter 2, the upper end of the first transverse cutter 2 is fixedly installed with the lower side of the cutter holder 4, and the right side of the first transverse cutter 2 is fixedly installed with the left side of the longitudinal cutter 1; the right-hand second cross cutter 3 that is equipped with of slitting knife 1, the outline of second cross cutter 3 is the curve of evagination below the right side, and 3 right parts outsides of second cross cutter are equipped with the arc sword, and 3 upper ends of second cross cutter are in the same place with 4 downside fixed mounting of blade holder, and 3 left sides of second cross cutter are in the same place with 1 right side fixed mounting of slitting knife.
In operations of cervical vertebra, thoracic vertebra and lumbar vertebra, the utility model can replace the prior surgical blade, and the skin of a patient is incised by the longitudinal knife 1 when the operation is started, so as to complete the exposure of an operation area; when the nucleus pulposus is removed in an operation, the fibrous ring is cut through the longitudinal cutter 1, the first transverse cutter 2 and the second transverse cutter 3, so that a cross-shaped incision is completed at one time, and the problem that the incision edge of the fibrous ring is uneven due to repeated operation of replacing the surgical knife is avoided; the longitudinal cutter 1, the first transverse cutter 2 and the second transverse cutter 3 adopt arc structures, so that nerve damage caused by visual field shielding can be avoided; the toughness or calcification condition of the nucleus pulposus tissue of the intervertebral is mastered by rotating the swinging cutter head; in addition, the nucleus pulposus enucleation operation is carried out in the operation, the utility model is inserted from the back of the intervertebral disc, the opening is kept parallel to the intervertebral disc to be incised, the maximum width can be various widths, the operation for cleaning the intervertebral disc is determined according to the body type of a patient and the width of a reamer used in the next operation, such as 7mm, 8mm, 9mm, 10mm and the like, the operation for excising the free intervertebral disc is only needed, and the operation can be determined according to the double-head thickness of the nucleus pulposus forceps, such as 4mm, 6mm and the like, so that the opening caliber of the annulus fibrosus can be met in one step regardless of the operation proficiency of an operator, a cutter head or a cutter handle is not needed to be replaced in the later period, and the time and the economic cost are saved. According to the requirements, on one hand, the tool bit and the tool handle can adopt a detachable fixed mounting mode, so that different tool bits can be conveniently selected according to the body type or the incision size of a patient, the connecting part 5 can be a quick assembling and disassembling head of a conventional well-known scalpel, and the quick assembling and disassembling head can be directly connected with the tool handle which is commonly used clinically at present; on the other hand, the tool bit and the tool handle can be arranged integrally, so that the hidden danger caused by repeated disinfection is avoided.
In addition, can set up blade holder 4 into cylindrically, in the use, through setting up columniform blade holder 4, be convenient for rotate the swing tool bit, grasp the toughness or the calcification condition of intervertebral nucleus pulposus tissue.
The knife for the annular fiber surgery can be further optimized or/and improved according to the actual requirement:
as shown in the attached figures 1, 2 and 3, the height of the longitudinal cutting knife 1 is a first height h1The width of the slitting knife 1 is a first width b1First height h1Is greater than the first width b1(ii) a The height of the first transverse cutter 2 is a second height h2The width of the first transverse cutter 2 is a second width b2Second height h2Is greater than the second width b2(ii) a The height of the second transverse cutter 3 is a third height h3The width of the second transverse cutter 3 is a third width b3Third height h3Greater than the third width b3. In the use, through such setting, be convenient for accomplish the cross incision, and can avoid the neural damage that the field of vision sheltered from and cause.
As shown in fig. 1, 2 and 3, the first height h1Between 6mm and 12mm, a first height h1And a second height h2Has a height difference of 1mm to 4mm, a first height h1And a third height h3The height difference of (a) is between 1mm and 4 mm. In the use process, through the arrangement, the lower end of the longitudinal cutting knife 1 is positioned below the first transverse cutting knife 2 and the second transverse cutting knife 3, so that the problem that too much nucleus pulposus which is not free is exposed, and even the end plate which cannot be observed is exposed is avoided.
As shown in fig. 1, 2 and 3, the first width b1Between 5mm and 10mm, a first width b1Is a second width b21.5 to 2 times of the first width b1Is a third width b31.5 to 2 times. In the use process, through the arrangement, the cutter head rotates and swings after entering the vertebral body gap, and the toughness or calcification condition of the nucleus pulposus tissue of the intervertebral is mastered.
As shown in fig. 1, 2 and 3, the outer contour of the longitudinal cutter 1 is in a semi-ellipse shape, a parabola shape or a quasi-semi-ellipse shape, the outer contour of the first transverse cutter 2 is in a quarter-ellipse shape, a descending curve shape or an exponential function shape, and the outer contour of the second transverse cutter 3 is in a quarter-ellipse shape, an ascending curve shape or an exponential function shape. In the use, through such setting, be convenient for accomplish the cross incision, and can avoid the neural damage that the field of vision sheltered from and cause.
As shown in the attached figures 1, 2 and 3, the knife handle comprises an upper straight rod 6, a middle cross rod 7 and a lower straight rod 8, the lower end of the upper straight rod 6 is fixedly installed with the left end of the middle cross rod 7, and the right end of the middle straight rod is fixedly installed with the upper end of the lower straight rod 8; the lower end of the lower straight rod 8 is detachably and fixedly arranged with the connecting part 5. In the using process, the handle is arranged to be in a gun type structure, so that the condition that the hands or instruments of an operator shield the visual field of the operator is avoided, and the whole handle can be made of a hollow metal material, so that the weight is reduced and the material is saved; in addition, the outer diameter of the upper straight rod 6 can be larger than that of the lower straight rod 8, so that the stability of the knife in holding is enhanced.
The technical feature groups form various embodiments of the utility model, and the utility model has strong adaptability and implementation effect, and can increase or decrease unnecessary technical features according to actual needs to meet the requirements of different situations.
Claims (9)
1. A knife for a fiber ring surgery is characterized by comprising a knife head and a knife handle, wherein the knife head comprises a longitudinal cutter, a first transverse cutter, a second transverse cutter, a knife holder and a connecting part; a first transverse cutter is arranged on the left side of the longitudinal cutter, the outer contour of the first transverse cutter is a curve which protrudes outwards towards the lower left side, an arc-shaped blade is arranged on the outer side of the left part of the first transverse cutter, the upper end of the first transverse cutter is fixedly installed with the lower side of the cutter holder, and the right side of the first transverse cutter is fixedly installed with the left side of the longitudinal cutter; the right-hand second transverse cutter that is equipped with of longitudinal cutter, the outline of second transverse cutter is the curve of evagination below the right side, and the outside of second transverse cutter right part is equipped with the arc sword, and second transverse cutter upper end and blade holder downside fixed mounting are in the same place, and second transverse cutter left side and longitudinal cutter right side fixed mounting are in the same place.
2. The knife of claim 1, wherein the slitting knife has a height of a first height and a width of a first width, the first height being greater than the first width; the height of the first transverse cutter is a second height, the width of the first transverse cutter is a second width, and the second height is larger than the second width; the height of the second transverse cutter is a third height, the width of the second transverse cutter is a third width, and the third height is larger than the third width.
3. The knife of claim 2 wherein the first height is between 6mm and 12mm, the difference between the first height and the second height is between 1mm and 4mm, and the difference between the first height and the third height is between 1mm and 4 mm.
4. The knife of claim 2 or 3, wherein the first width is between 5mm and 10mm, the first width is 1.5 to 2 times the second width, and the first width is 1.5 to 2 times the third width.
5. The knife for annulus fibrosus surgery of claim 1, 2 or 3, wherein the outer contour of the longitudinal cutting blade is in a semi-elliptical shape, a parabolic shape or a semi-elliptical shape, the outer contour of the first transverse cutting blade is in a quarter-elliptical shape, a descending curve shape or an exponential function shape, and the outer contour of the second transverse cutting blade is in a quarter-elliptical shape, an ascending curve shape or an exponential function shape.
6. The knife for annulus fibrosus surgery of claim 4, wherein the outer contour of the longitudinal cutting blade is a semi-elliptical shape, a parabolic shape, or a quasi-semi-elliptical shape, the outer contour of the first transverse cutting blade is a quarter-elliptical shape, a descending curve shape, or an exponential function shape, and the outer contour of the second transverse cutting blade is a quarter-elliptical shape, an ascending curve shape, or an exponential function shape.
7. The knife for the operation of the annulus fibrosus according to claim 1, 2, 3 or 6, wherein the knife handle comprises an upper straight rod, a middle cross rod and a lower straight rod, the lower end of the upper straight rod is fixedly installed with the left end of the middle cross rod, and the right end of the middle straight rod is fixedly installed with the upper end of the lower straight rod; the lower end of the lower straight rod is detachably and fixedly arranged together with the connecting part.
8. The knife for the operation of the annulus fibrosus according to claim 4, wherein the knife handle comprises an upper straight rod, a middle cross rod and a lower straight rod, the lower end of the upper straight rod is fixedly installed with the left end of the middle cross rod, and the right end of the middle straight rod is fixedly installed with the upper end of the lower straight rod; the lower end of the lower straight rod is detachably and fixedly arranged together with the connecting part.
9. The knife for the operation of the annulus fibrosus according to claim 5, wherein the knife handle comprises an upper straight rod, a middle cross rod and a lower straight rod, the lower end of the upper straight rod is fixedly installed with the left end of the middle cross rod, and the right end of the middle straight rod is fixedly installed with the upper end of the lower straight rod; the lower end of the lower straight rod is detachably and fixedly arranged together with the connecting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122279948.3U CN216090668U (en) | 2021-09-18 | 2021-09-18 | Knife for operation of fibrous ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122279948.3U CN216090668U (en) | 2021-09-18 | 2021-09-18 | Knife for operation of fibrous ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216090668U true CN216090668U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122279948.3U Active CN216090668U (en) | 2021-09-18 | 2021-09-18 | Knife for operation of fibrous ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216090668U (en) |
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2021
- 2021-09-18 CN CN202122279948.3U patent/CN216090668U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20230609 Address after: Floor 3A, Building A1, Jiulonghu International Enterprise Headquarters Park, No. 19 Suyuan Avenue, Jiangning District, Nanjing City, Jiangsu Province, 211102 (Jiangning Development Zone) Patentee after: Bangshi Technology (Nanjing) Co.,Ltd. Patentee after: Jiangsu Shiyu Intelligent Medical Technology Co.,Ltd. Patentee after: Shandong Shiyu Intelligent Medical Technology Co.,Ltd. Address before: 211102 floor 3a, building A1, Jiulong lake international enterprise headquarters park, No. 19, Suyuan Avenue, Jiangning District, Nanjing, Jiangsu Province Patentee before: Bangshi Technology (Nanjing) Co.,Ltd. |