CN209966455U - Unscrewing type minimally invasive channel expansion device - Google Patents
Unscrewing type minimally invasive channel expansion device Download PDFInfo
- Publication number
- CN209966455U CN209966455U CN201920348683.8U CN201920348683U CN209966455U CN 209966455 U CN209966455 U CN 209966455U CN 201920348683 U CN201920348683 U CN 201920348683U CN 209966455 U CN209966455 U CN 209966455U
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- inner cylinder
- cylinder
- outer cylinder
- handle
- sliding groove
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- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 230000010339 dilation Effects 0.000 claims description 6
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 208000014674 injury Diseases 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002674 endoscopic surgery Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000944 nerve tissue Anatomy 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The utility model discloses a rotary opening type minimally invasive dilatation channel device, which comprises an inner cylinder, an outer cylinder, a compression ring and an outer cylinder handle, wherein the inner cylinder and the outer cylinder are nested concentrically, and the outer circular surface of the inner cylinder and the inner circular surface of the outer cylinder are mutually connected in a rotary sliding manner; a stepped annular chute is formed between the folded part of the end surface of the inner cylinder and the outer circular surface of the inner cylinder; the end part of the outer cylinder is embedded into the bottom of the stepped annular sliding groove, the compression ring and the folded part of the end surface of the inner cylinder are in interference fit with each other at the upper part of the stepped annular sliding groove, so that the inner cylinder and the compression ring are kept fixed, and the end part of the outer cylinder can rotate and slide in the stepped annular sliding groove; the parts of the inner cylinder and the outer cylinder, which are used for being placed into a human body, are semicircular rings; the outer cylinder handle is vertically arranged on the outer circular surface of the end part of the outer cylinder. The utility model discloses the rotatory urceolus handle of accessible, the angle between adjustment inner tube and the urceolus semicircle ring to strutting and enlarging linear incision face, flexible operation, safety are convenient.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to unscrewing type minimal access dilation channel device.
Background
When soft tissues are expanded in spinal micro-trauma surgery and spinal endoscopic surgery, a minimally invasive surgical access needs to be established through an incision. The existing minimally invasive channel expander is generally cylindrical, and a larger incision needs to be cut on a patient's body to insert the minimally invasive channel expander into the human body, so that a larger bleeding area is locally generated on the patient, and blood vessels and nerve tissues are damaged.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the defects of the prior art, the rotary-open minimally invasive dilation channel device is specially designed and manufactured, a channel can be formed in a human body only by cutting a tiny linear incision for a patient, an operation access is established or a spinal endoscope is placed, the linear incision surface can be adjusted, and the rotary-open minimally invasive dilation channel device is flexible, safe and convenient to operate.
The technical scheme is as follows: a rotary opening type minimally invasive dilatation channel device comprises an inner cylinder, an outer cylinder, a compression ring and an outer cylinder handle, wherein the inner cylinder and the outer cylinder are nested concentrically, and the outer circular surface of the inner cylinder and the inner circular surface of the outer cylinder are mutually connected in a rotary sliding manner; the outer end face of the end part of the inner cylinder is folded to form an inner cylinder end face folding part, and a stepped annular sliding groove is formed between the inner cylinder end face folding part and the outer circular face of the inner cylinder; the end part of the outer cylinder is embedded into the bottom of the stepped annular sliding groove, the compression ring and the folded part of the end surface of the inner cylinder are in interference fit with each other at the upper part of the stepped annular sliding groove, so that the inner cylinder and the compression ring are kept fixed, and the end part of the outer cylinder can rotate and slide in the stepped annular sliding groove; the parts of the inner cylinder and the outer cylinder, which are used for being placed into a human body, are semicircular rings, and the semicircular rings of the inner cylinder are nested inside the semicircular rings of the outer cylinder; the outer cylinder handle is vertically arranged on the outer circular surface of the end part of the outer cylinder.
Preferably, the device is further provided with two symmetrical inner cylinder handles which are respectively and vertically arranged on the outer circular surface of the folded part of the end surface of the inner cylinder.
Preferably, the inner cylinder handle overlap pieces are also arranged, the two inner cylinder handle overlap pieces are also symmetrical, the two inner cylinder handle overlap pieces are arranged on two sides of the folded part of the end face of the inner cylinder, one end of each inner cylinder handle overlap piece is vertically fixed on the inner cylinder handle, and the length of each inner cylinder handle overlap piece is slightly larger than the vertical distance between the inner cylinder handle and the outer cylinder handle.
The use process comprises the following steps: in the initial state, the semicircular rings of the inner cylinder are nested inside the semicircular rings of the outer cylinder, the circle center tangent planes of the two semicircular rings are completely overlapped, at the moment, the semicircular ring parts of the inner cylinder and the outer cylinder are placed into the linear incision of a doctor, and due to the fact that the circle center tangent planes are overlapped, the semicircular ring parts are easily placed into the linear incision, and unnecessary injury to the patient in the operation process is avoided. Then, the doctor holds the inner cylinder and the inner cylinder handle tightly, and simultaneously rotates the outer cylinder handle to drive the outer cylinder to rotate around the circle center of the outer cylinder, so that the semi-circle ring of the outer cylinder rotates, an included angle alpha is formed between the circle center surface of the semi-circle ring of the inner cylinder and the circle center surface of the semi-circle ring of the outer cylinder, and the doctor can adjust the size of the wound surface of the patient according to the need to facilitate the operation visual angle. Finally, after the handle of the outer cylinder rotates 180 degrees, the semicircular ring of the outer cylinder rotates to the opposite side of the original position, namely, a closed circular channel is formed with the semicircular ring of the inner cylinder, and a surgeon can establish an operation access through the channel to perform an operation in the channel or place a spinal endoscope to complete various minimally invasive operations under the monitoring of the endoscope.
The inner cylinder handle and the inner cylinder are held by a doctor when in use, and the function of fixing the inner cylinder can be achieved; the inner cylinder handle sheets can play a role in assisting in marking and determining positions, when the inner cylinder handle and the outer cylinder handle are parallel to each other in an initial state, the outer cylinder handle is laid on one inner cylinder handle sheet, and when a doctor rotates the outer cylinder handle along the circle center and then places the outer cylinder handle sheet on the inner cylinder handle sheet on the other side, the outer cylinder handle is rotated 180 degrees, at the moment, the rotation can be stopped, and the semicircular ring of the outer cylinder and the semicircular ring of the inner cylinder form a closed circular channel.
Has the advantages that: the utility model can form a channel in the human body to establish an operation access or place a spinal endoscope only by cutting a tiny linear incision for a patient; and the angle between the inner cylinder and the semicircular ring of the outer cylinder can be adjusted by rotating the handle of the outer cylinder so as to expand the linear incision surface, thus being beneficial to the operation visual angle and being flexible, safe and convenient to operate.
Drawings
Fig. 1 is a schematic view of the assembly section in the initial state of the present invention.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
Fig. 3 is an assembled cross-sectional view of the outer barrel handle of fig. 1 rotated 180.
Fig. 4 is a sectional view B-B in fig. 3.
FIG. 5 is a schematic view showing an angle α formed between the circle center planes of the semicircular rings of the inner cylinder and the outer cylinder during the rotation of the handle of the outer cylinder in FIG. 1.
Fig. 6 is a schematic sectional view of the inner tube of the present invention.
Fig. 7 is a schematic sectional view of the outer tube of the present invention.
Fig. 8 is a schematic cross-sectional view of the middle compression ring of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-4, a rotary-open type minimally invasive dilatation channel device comprises an inner cylinder 1, an outer cylinder 2, a compression ring 5 and an outer cylinder handle 4, wherein the inner cylinder 1 and the outer cylinder 2 are nested concentrically, and the outer circular surface of the inner cylinder 1 is mutually connected with the inner circular surface of the outer cylinder 2 in a rotary sliding manner; the outer end face of the end part of the inner cylinder 1 is folded to form an inner cylinder end face folding part 11, and a stepped annular sliding groove 12 is formed between the inner cylinder end face folding part 11 and the outer circular face of the inner cylinder 1 (the inner cylinder structure is shown in detail in fig. 6); the outer cylinder end 21 is embedded into the bottom of the stepped annular sliding groove 12 (see fig. 7 for details of the outer cylinder structure), and the clamp ring 5 is in interference fit with the inner cylinder end surface folded part 11 on the upper part of the stepped annular sliding groove 12 (see fig. 8 for details of the clamp ring structure), so that the inner cylinder 1 and the clamp ring 5 are kept fixed, and the outer cylinder end 21 can rotationally slide inside the stepped annular sliding groove 12; the parts of the inner cylinder 1 and the outer cylinder 2 used for being placed into a human body are both semicircular rings, and the semicircular rings of the inner cylinder 1 are nested inside the semicircular rings of the outer cylinder 2; the outer cylinder handle 4 is vertically arranged on the outer circular surface of the end part of the outer cylinder 2.
The inner cylinder handle 3 is also arranged, and the two symmetrical inner cylinder handles 3 are respectively and vertically arranged on the outer circular surface of the folded part 11 on the end surface of the inner cylinder. The inner barrel handle 3 can be used for holding the fixed inner barrel 1 by a doctor.
The inner cylinder handle overlap pieces 6 are also arranged, the two inner cylinder handle overlap pieces 6 are also symmetrical, the two inner cylinder handle overlap pieces are arranged on two sides of the inner cylinder end face turnover part 11, one end of each inner cylinder handle overlap piece is vertically fixed on the inner cylinder handle 3, the length of each inner cylinder handle overlap piece is slightly larger than the vertical distance between the inner cylinder handle 3 and the outer cylinder handle 4, and the outer cylinder handle 4 can be overlapped on the inner cylinder handle overlap pieces 6 when rotating to a certain position.
The use process comprises the following steps: in the initial state, the semicircular rings of the inner cylinder 1 are nested inside the semicircular rings of the outer cylinder 2, the circle center faces of the two semicircular rings are completely overlapped (as shown in fig. 2), at the moment, the semicircular ring parts of the inner cylinder and the outer cylinder are placed into the linear incision of a patient, and due to the fact that the circle center faces are overlapped, the semicircular ring parts are easily placed into the linear incision, and unnecessary injury to the patient in the operation process is avoided. Then, the doctor grips the inner cylinder 1 and the inner cylinder handle 3, and simultaneously rotates the outer cylinder handle 4 to drive the outer cylinder 2 to rotate around the circle center, so that the semicircular ring of the outer cylinder 2 rotates, an included angle alpha (shown in figure 5) is generated between the circle center surface of the semicircular ring of the inner cylinder and the circle center surface of the semicircular ring of the inner cylinder, and the doctor can adjust the size of the wound surface of the patient according to the need to facilitate the operation visual angle. Finally, after the handle 4 of the outer cylinder rotates 180 degrees, the semicircular ring of the outer cylinder 2 rotates to the opposite side of the original position, namely, a closed circular channel (shown in fig. 4) is formed with the semicircular ring of the inner cylinder 1, and a doctor can establish an operation access through the channel to perform an operation in the channel or place a spinal endoscope to complete various minimally invasive operations under the monitoring of the endoscope.
The inner cylinder handle 3 and the inner cylinder 1 are held by a doctor when in use, and can play a role in fixing the inner cylinder 1; the inner cylinder handle tabs 6 can play a role in assisting in marking and determining positions, when the inner cylinder handle 3 and the outer cylinder handle 4 are parallel to each other in an initial state, the outer cylinder handle 4 is lapped on one of the inner cylinder handle tabs 6, and when a doctor rotates the outer cylinder handle 4 along the circle center and then laps the inner cylinder handle tabs 6 on the other side, the outer cylinder handle 4 is indicated to rotate 180 degrees, at the moment, the rotation can be stopped, and a closed circular channel is formed by the semicircular ring of the outer cylinder 2 and the semicircular ring of the inner cylinder 1.
In the embodiment, the diameter of the inner circular surface of the inner cylinder 1 is 14mm, the matching size of the outer circular surface of the inner cylinder 1 and the inner circular surface of the outer cylinder 2 is 17H8/e7, the diameter of the outer circular surface of the inner cylinder end surface folding part 11 is 35mm, and the matching size of the stepped inner circular surface of the inner cylinder end surface folding part 11 and the outer circular surface of the compression ring 5 is 31H7/s 6; the height of the semicircular rings of the inner cylinder 1 and the outer cylinder 2 is 50mm, and the distance between the end surfaces of the two inner cylinder handles 1 (namely the length of the rotary minimally invasive dilation channel device in figure 1) is 180 mm.
The above is only to choose the preferred embodiment of the present invention to explain the present invention in further detail, the present invention also has other applications or combinations, which can be selected according to specific requirements, and it cannot be considered that the present invention is limited to these explanations. For those skilled in the art to which the invention pertains, equivalent substitutions or modifications may be made without departing from the spirit of the invention, and all such equivalents, as may be used in the same or similar manner, are deemed to fall within the scope of the invention as defined by the appended claims.
Claims (3)
1. A rotary opening type minimally invasive dilatation channel device is characterized by comprising an inner cylinder, an outer cylinder, a compression ring and an outer cylinder handle, wherein the inner cylinder and the outer cylinder are nested concentrically, and the outer circular surface of the inner cylinder and the inner circular surface of the outer cylinder are mutually connected in a rotary sliding manner; the outer end face of the end part of the inner cylinder is folded to form an inner cylinder end face folding part, and a stepped annular sliding groove is formed between the inner cylinder end face folding part and the outer circular face of the inner cylinder; the end part of the outer cylinder is embedded into the bottom of the stepped annular sliding groove, the compression ring and the folded part of the end surface of the inner cylinder are in interference fit with each other at the upper part of the stepped annular sliding groove, so that the inner cylinder and the compression ring are kept fixed, and the end part of the outer cylinder can rotate and slide in the stepped annular sliding groove; the parts of the inner cylinder and the outer cylinder, which are used for being placed into a human body, are semicircular rings, and the semicircular rings of the inner cylinder are nested inside the semicircular rings of the outer cylinder; the outer cylinder handle is vertically arranged on the outer circular surface of the end part of the outer cylinder.
2. The unscrewing minimally invasive dilation channel device according to claim 1, further comprising two symmetrical inner cylinder handles, wherein the two symmetrical inner cylinder handles are vertically arranged on the outer circular surface of the folding portion on the end surface of the inner cylinder.
3. The unscrewing minimally invasive dilation channel device according to claim 1, further comprising two symmetrical inner barrel handle tabs, wherein the two symmetrical inner barrel handle tabs are disposed on two sides of the inner barrel end surface folding portion, one end of each inner barrel handle tab is vertically fixed on the inner barrel handle, and the length of each inner barrel handle tab is slightly larger than the vertical distance between the inner barrel handle and the outer barrel handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920348683.8U CN209966455U (en) | 2019-03-19 | 2019-03-19 | Unscrewing type minimally invasive channel expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920348683.8U CN209966455U (en) | 2019-03-19 | 2019-03-19 | Unscrewing type minimally invasive channel expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209966455U true CN209966455U (en) | 2020-01-21 |
Family
ID=69254987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920348683.8U Expired - Fee Related CN209966455U (en) | 2019-03-19 | 2019-03-19 | Unscrewing type minimally invasive channel expansion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209966455U (en) |
-
2019
- 2019-03-19 CN CN201920348683.8U patent/CN209966455U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200121 |