CN2396780Y - Gun type cutting instrument for lumbar partial removal of vertebral disc - Google Patents
Gun type cutting instrument for lumbar partial removal of vertebral disc Download PDFInfo
- Publication number
- CN2396780Y CN2396780Y CN 98227122 CN98227122U CN2396780Y CN 2396780 Y CN2396780 Y CN 2396780Y CN 98227122 CN98227122 CN 98227122 CN 98227122 U CN98227122 U CN 98227122U CN 2396780 Y CN2396780 Y CN 2396780Y
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- pipe
- sickle
- gear
- tubular cutter
- trocar sheath
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Abstract
The utility model relates to a gun type cutting instrument for lumbar intervertebral disc, which is an inner pipe-shaped cutter and is fixed on a loose piece. Both ends of a cutter pipe are connected with a return water sleeve, a return water joint, a water inflow casing, a water inflow sleeve, a water inflow joint and a casing pipe, wherein, the casing pipe is provided with a cover cap and a press cap. The pipe top of the left end of the casing pipe is sealed, and the upper side of the end of the casing pipe is provided with a square hole. The loose piece is arranged on a guide plate, and the bottom of the loose piece is inserted with a connecting rod. The other end of the connecting rod is inserted on a variable-speed drive component and finally matched with a miniature motor. The gun type cutting instrument for lumbar intervertebral disc is connected with a speed changer by a fast nut, and the speed changer is integrated with a battery box. Because the diameter of the inner pipe-shaped cutter is from 3 mm to 4 mm and the battery box can be filled with four sections of AA batteries, the utility model does not have the involvement of a power supply line when used to operate, and can exactly position and cut to affected tissue.
Description
This utility model relates to a kind of surgery medical surgical instrument.
Existing lumbar intervertebral disc sickle has three kinds:
1, clamp-type surgical device, it adopts manual operations fully, and once operation needs clamp is repeatedly taken out, puts into from surgical wound.And operating time is long, the wound easy infection.
2, rotary cutter, it is a kind of by electric motor driven surgical instrument, so dragged a power line on surgical device, then must tie down moving of surgical device, and is very inconvenient when making operation.And surgical device itself, because of its cutter are Pipe Cutting internal rotation outside, after wound is inserted in outer Pipe Cutting, the negative pressure that relies on vacuum pump to cause, the pathological tissues of wound site can be sucked in the outer Pipe Cutting, the tissue that the cutter through rotating will suck downcuts, because the cutter rotary speed is very fast, often make the tissue of cutting-out become pasty state, be unfavorable for that then the doctor does necessary observation in operation.The tissue that downcuts is drawn in the pail for used dressings by negative pressure.
3, reciprocating cutterbar is a kind of cutter to be made tubulose, its pipe end tool cutting edge, and make reciprocal cutting movement in the Pipe Cutting outside.Outside the pathological tissues in the wound is inhaled into after the Pipe Cutting, the tissue that the cutting edge of cutter can will be inhaled into downcuts, this cutting-out be organized into bulk, make the doctor who operates be easy to observe.And massive texture promptly is drawn in the pail for used dressings.But this surgical device still will be established power line, therefore makes troubles to operation technique equally.When the position of pathological tissues and surgical device cutter location were not inconsistent, the operation technique doctor must make the position that cutting knife can be aimed at needs cutting with the position change of surgical device simultaneously.In addition because the cutting edge diameter of this operation tubulose cutter is 5MM, and the slit of lumbar intervertebral disc is less than 5MM, so need enlarge wound during operation.Because tubulose cutter body is to fix with the firm mode in screw top, so the tube wall of tubulose cutter body can not be too thin.And the caliber of tubulose cutter pipe and tube wall be by pipe standard regulation, and caliber is big and tube wall is corresponding thicker, and the little then tube wall of caliber is thinner, so this operation tubulose cutter just can't diameter reduction, in the hope of satisfying the thickness requirement of tube wall.
The purpose of this utility model is to provide a kind of can accurately the aligning to need the excision position, and operative incision is little, and can get rid of the tissue of cutting-out automatically and can not stop up the pistol type lumbar intervertebral disc sickle of conduit.
This utility model is to implement like this:
Pistol type lumbar intervertebral disc sickle is made of battery case, variator, sickle three parts, and sickle is connected by quick nut with variator.Nut is a kind of nut of several coarse-pitch thread of tool fast, and positive direction is twisted can be fastening, twists in the other direction and can unclamp.So before operation, can take off sickle fast, sterilization at high temperature, this is big characteristics.
Because pistol type lumbar intervertebral disc sickle is driven by aneroid battery, has then saved power line, has brought convenience to operation technique.
Sickle is made of trocar sheath, interior tubular cutter, water supply connector, backwater joint, water inlet cover, backwater cover, water inlet overcoat, block, pressure cap, sealing ring, reciprocal slide block, connecting rod, declutch shift shaft, eccentric, cutter mount and quick nut.
Variator is made of motor, driving gear, driven gear wheel, driven coaxial pinion, declutch shift shaft, shift fork gear, connecting rod.
Double speed on and off switch and four joint No.5 cells are housed on the battery case.
To introduce the structure of assembly relation He each critical piece of each parts below:
With interior tubular cutter be fixed on can reciprocal active loose piece on, this reciprocal loose piece is the fixed block of a reverse F shape, respectively have two screws that can tighten the screw on two horizontal edges of F shape, DRIVE SCREWS, can make the opening closure of two horizontal edges of F shape, then can clamp the cutter pipe that places in two horizontal edges, the tight mode of this cutter pipe clamp has been got rid of the mode that clenches the cutter pipe with screw, then can reach the purpose with cutter pipe reduced.
The loose piece bottom is inserted in the gap slot of circular guide plate, and in the circular hole of another insertion driver blade of a connecting rod of being inserted under the loose piece, when driver blade rotated, drivening rod horizontally slipped in the gap slot of circular guide plate, and then loose piece is also done synchronous reciprocatingly sliding in groove.The interior tubular cutter pipe that is contained on the loose piece passes shell, extends to both direction, and an end to the right connects a backwater joint.Cutter Guan Yiduan left passes into water overcoat, the water inlet cover, and trocar sheath is added sealing ring, loads onto trocar sheath outside interior cutter pipe, covers block and pressure cap at last.The pipe of the left end of trocar sheath top seal, opens a square opening at the upside of pipe end, and from then on supply and demand is cut organizes square opening as suction inlet.Outer the putting of water inlet is equipped with water supply connector.
Be provided with connecting rod below the loose piece, connecting rod passes circular guide plate, is connected with driver blade, and driver blade is circular, has two circular holes along centrage, and the transmission bobbin is inserted in a hole, and this another end inserts in the eccentric eccentric orfice.Camshaft inserts a declutch shift shaft, and declutch shift shaft is with bearing holder (housing, cover) outward, and declutch shift shaft is connected with the shift fork gear.The shift fork gear is meshed with the coaxial pinion of other gear, and other gear is meshed with the coaxial pinion of driven gear, and driven gear is meshed with driving gear.
Motor is equipped with in the bottom of variator, and the motor shaft end gear is meshed with driving gear.
Behind motor start-up, drive driving gear by motor gear, driving gear drives driven gear, driven gear drives other gear, other gear drive shift fork gear rotation, and shift fork gear driven declutch shift shaft drives the eccentric rotation, camshaft drives the driver blade rotation, connecting rod on the driver blade drives that loose piece is done left, reciprocating motion to the right on guide plate, then the interior tubular cutter on the loose piece also synchronously work left, reciprocating motion to the right, this action promptly is the cutting action of interior tubular edge.
Tubular cutter is fixed on the loose piece in this, is the upper and lower transverse arm degree of tightness that makes F shape loose piece with pinching screw, clamping action power do not concentrate on tubular cutter cutter pipe certain a bit on, so the diameter of tubular cutter can be changed little to 3-4mm.
The right output port place of the interior tubular cutter of sickle is connected to the backwater cover, and the backwater cover is outer to be with backwater joint, puts rubber tube on this backwater joint, joins with negative pressure pump.Water inlet cover and water inlet cover outside the outer tube layer in the stage casing of interior tubular cutter is provided with are provided with trocar sheath in water inlet cover inboard, the cutting edge end of tubular cutter in the length of trocar sheath slightly is longer than.
During operation, aim at the position that needs cutting with trocar sheath, this action can accidentally not injured other tissue.Because pathological tissues can be inhaled in the square opening of trocar sheath by the effect of the negative pressure of vacuum pump formation, is promptly cut away by the cutting edge of tubular cutter in reciprocating.In being pressed into by the current that enter from water inlet pipe, in the pipe of tubular cutter, exports from the return pipe of pipe tail, in vacuum inspiration pail for used dressings in the tissue that downcuts.
The effect of pressure cap is the position that is used for adjusting the square opening of trocar sheath, promptly rotates pressure cap, can make the trocar sheath rotation, then also rotation synchronously of the square opening on its termination, correctly aim at the position that needs cutting up to square opening, can carry out cutting operation, thereby improve the accuracy of surgery location.This just makes operation technique become very convenient, easy.
Sickle can inject normal saline by water supply connector when work, this normal saline arrives trocar sheath mouth place by inside and outside water inlet cover and changes in the interior tubular cutter pipe again.Because the square opening of trocar sheath is organized and blocks, and the overcoat mouth of pipe is to insert in the tissue of human body, between tissue all by the organization network sealing, so normal saline is can not bleed in the human body generally speaking.
The backwater joint of establishing at the right-hand member of sickle has rubber tube and negative pressure pump to join, and when performing an operation, should open negative pressure pump earlier, be negative pressure in the pipe of tubular cutter then, so the normal saline of input must enter, by backwater joint, enter trash receptacle again in the edge of a knife pipe of interior tubular cutter.When normal saline flows, the fragment of tissue of cutting-out is entrained in the normal saline enters in the waste material storage through backwater joint.Therefore, use this resectoscope, the tissue that can not downcut stops up the phenomenon of resectoscope pipeline.
Before performing an operation, unscrew the quick nut between sickle and battery case earlier, take off sickle and put into the high pressure sterilizer high temperature sterilize.Change the battery in the battery case, more sterile sickle is joined by quick nut and battery case, the doctor who performs an operation can hold battery case and carry out the resection operation that intervertebral disc protrudes tissue.
Before the operation, thrust from epidermis earlier with the minute hand bar, through diseased region, wound is expanded to the trocar sheath that can put into sickle with the wound dilator then till, put into the trocar sheath of sickle at last, owing to the caliber of trocar sheath has only 3-4mm, so surgical wound is little.Open the release knob on the sickle battery case, then the micromachine in the box starts, and whether tubular cutter is doing the reciprocating motion of set a distance in observing, if all are normal, opens negative pressure pump again, and water supply connector is connected with the normal saline storage, can undergo surgery.
Adopt the advantage of pistol type lumbar intervertebral disc sickle to be:
1, battery-powered, safety, flexible is not with circumscripted power line;
2, trocar sheath can rotate pressure cap and rotates, and cutting edge can accurately be aimed at needs the excision position;
3, the trocar sheath diameter has only 3-4mm, so surgical wound is little;
4, adopt axially back and forth cutting mode, thus downcut be organized into uniform bulk, can blocking pipe;
5, hand-held is convenient in the moulding of the approximate pistol of the profile of sickle;
6, sickle and battery case adopt split-type structural, and two parts are connect by quick nut, are convenient to take off sickle and carry out sterilization under the high temperature.
Below in conjunction with accompanying drawing pistol type lumbar intervertebral disc sickle is done detailed elaboration.
Accompanying drawing 1 is the overall structure sketch map of pistol type lumbar intervertebral disc sickle;
Accompanying drawing 2 is eccentric wheel structure sketch maps of pistol type lumbar intervertebral disc sickle;
Accompanying drawing 3 is declutch shift shaft structural representations of pistol type lumbar intervertebral disc sickle;
Accompanying drawing 4 is driver blade structural representations of pistol type lumbar intervertebral disc sickle;
Accompanying drawing 5 is guide plate structure sketch maps of pistol type lumbar intervertebral disc sickle;
Accompanying drawing 6 is structural representations that the reciprocal loose piece of pistol type lumbar intervertebral disc sickle is connected with guide plate.
With reference to accompanying drawing 1:
Pistol type lumbar intervertebral disc sickle is made of battery case (2), variator, sickle three parts of (1) with cover of having switch (25), and sickle is connected by quick nut (17) with variator.Nut (17) is a kind of nut with several coarse-pitch thread fast, and positive direction is twisted can be fastening, twists in the other direction and can unclamp.So before operation, can take off sickle fast, sterilization at high temperature, this is big characteristics.
Because pistol type lumbar intervertebral disc sickle is driven by aneroid battery, has then saved power line, has brought convenience to operation technique.
Sickle is made of trocar sheath (5), interior tubular cutter (6), water supply connector (4), backwater joint (16), water inlet cover (11), backwater cover (15), water inlet overcoat (12), block (8), pressure cap (7), sealing ring (9) (10), reciprocal loose piece (14).
Variator by motor (3) and with the connecting rod (26) that inserts reciprocal loose piece (14), driver blade (19), eccentric (20), declutch shift shaft (21), shift fork gear (22), other gear (27), other gear coaxial pinion (28), driven gear coaxial pinion (23), driven gear (24), driving gear (29) and nut (17) formation fast.
Double speed on and off switch and four joint No.5 cells are housed on the battery case.
To introduce the structure of assembly relation He each critical piece of each parts below:
With reference to accompanying drawing 1, accompanying drawing 6 and accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5,
With interior tubular cutter (6) be fixed on can two transverse arms of reciprocal active F shape loose piece (14) on, penetrate two screws on the transverse arm with two screws, screw screw can fix in the cutter pipe of tubular cutter (6).The interior tubular cutter (6) that is fixed on the loose piece (14) passes shell, extends to both direction, and an end to the right connects a backwater cover (15), backwater joint (16).Interior tubular cutter (6) one ends left pass into water overcoat (12), water inlet cover (11), and trocar sheath (5) is added sealing ring (9) (10); Outside the pipe of interior tubular cutter (6), load onto trocar sheath (5), cover block (8), cover pressure cap (7) at last.The pipe top of the left end of trocar sheath (5) is sealed, and opens a square opening at the upside of pipe end, and during operation, pathological tissues from then on square opening sucks.On the water inlet overcoat (12) water supply connector (4) is housed.
Loose piece (14) is contained in the gap slot of circular guide plate (18), makes by connecting rod (26) that loose piece (14) is done left in the gap slot of guide plate (18), to the right reciprocal activity.The gap slot that the connecting rod of being inserted on the going to the bottom of loose piece (14) (26) passes circular guide plate (18) is inserted on the circular hole of driver blade (19).Driver blade (19) is a circular piece that has two circular holes on diameter line, a connecting rod (26) is inserted in a hole, another root axle is inserted in another hole, this the other end inserts in the eccentric orfice of eccentric (20), insert the upper shaft lever of declutch shift shaft (21) in the eccentric circle center hole, the following axostylus axostyle of declutch shift shaft (21) inserts in the axis hole of shift fork gear (22), and shift fork gear (22) is to be meshed with coaxial pinion (28) on the other gear (27); And other gear (27) is meshed with the coaxial pinion (23) of driven gear (24), driven gear (24) is meshed with driving gear (29); Driving gear (29) is to be meshed with the travelling gear of a micromotor (3).
Have and to adorn four joint No.5 cells in the battery case (2) of lid (1), establish switch (25) on the box limit.
Fast nut (17) can screw with the screw thread in the outside, upper end of variator, sickle and variator are integrated, and variator is incorporated with battery case (2), and is furnished with lid (1), lid screw (30).
Interior tubular cutter (6) is fixed on the slide block (14), so the diameter of interior tubular cutter (6) can be changed little of 3-4mm.
The right output port place of the interior tubular cutter (6) of sickle is connected to backwater cover (15), and backwater cover (15) is outer to be with backwater joint (16), and this backwater joint puts rubber tube on (16), joins with negative pressure pump.Outer tube layer in the stage casing of interior tubular cutter (6) is provided with into water cover (11) and water inlet overcoat (12), the outer trocar sheath (5) that is with of tubular cutter (6) in being enclosed within, and the length of tubular cutter (6) in the length of trocar sheath (5) slightly is longer than, and shelter from the cutting edge end.
After motor (3) starts, drive driving gear (29) by motor gear, driving gear (29) drives driven gear (24), driven gear (24) drives other gear (27), other gear (27) shift fork gear (22) rotation, shift fork gear (22) drives declutch shift shaft (21) and drives eccentric (20) rotation, camshaft drives driver blade (19) rotation, driver blade (19) drives slide block (14) by connecting rod (26) and does left in the gap slot of guide plate (18), reciprocating motion to the right, then the interior tubular cutter (6) on the slide block (14) is also done left synchronously, reciprocating motion to the right, this action promptly is the cutting action of interior tubular cutter (6) cutting edge.
Before the operation, thrust earlier through diseased region from epidermis with the minute hand bar, till wound being expanded to the trocar sheath (5) that to put into sickle with the wound dilator then, put into the trocar sheath (5) of sickle at last, because the caliber of trocar sheath has only 3-4mm, so surgical wound is little.
During operation, the square opening of being opened with the top upside of trocar sheath (5) is aimed at the position that needs cutting, and needn't notice that the edge of a knife can accidentally injure other tissue.Because pathological tissues can be inhaled in the square hole of trocar sheath (5) pipe end top by the effect of the negative pressure of vacuum pump formation, is promptly cut away by the pipe end cutting edge of tubular cutter (6) in reciprocating.The tissue that downcuts is pressed in the pipe of interior tubular cutter (6) by the current that enter from water supply connector (4) cutting edge from the mouth of pipe of interior tubular cutter (6), so water is located output with the backwater joint (16) of organizing the afterbody of shifting to interior tubular cutter that is cut, in vacuum inspiration pail for used dressings.Finish the resection operation of whole pathological tissues thus.
The effect of pressure cap (7) is the position of the square opening of the trocar sheath (5) of tubular cutter (6) in being used for adjusting, and purpose is to aim at the tissue part that needs excision.During use,, correctly aim at the position that needs cutting, can carry out cutting operation, thereby improve the accuracy of surgery location, make operation technique become very convenient, easy again simultaneously up to square opening as long as rotation pressure cap (7) can make trocar sheath (5) rotation.
Sickle is when work, can inject normal saline by water supply connector (4), the cutting edge place of tubular cutter (6) in this normal saline arrives by inside and outside water inlet cover (11) (12), because trocar sheath (5) front end is to insert in the operative incision tissue of human body, and between tissue all by organization network sealing, so normal saline is can not bleed in the human body generally speaking.
During operation, should open negative pressure pump earlier, then be negative pressure in the pipe of interior tubular cutter (6),, by backwater joint (16), enter trash receptacle at last again in the cutting edge pipe of interior tubular cutter (6) so the normal saline of input must enter.When normal saline flows, the fragment of tissue of cutting-out is entrained in the normal saline enters in the waste material storage through backwater joint.Therefore, use this resectoscope, the tissue that can not downcut stops up the phenomenon of resectoscope pipeline.
Before performing an operation, unscrew the quick nut (17) between sickle and battery case earlier, take off sickle and put into the high pressure sterilizer high temperature sterilize.Loosening battery case screw (30), open battery case lid (1), change the battery in the battery case (2), more sterile sickle is joined by quick nut (17) and battery case (2), the doctor who performs an operation can hold battery case (2) and carry out the resection operation that intervertebral disc protrudes tissue.Because the caliber of interior tubular cutter (6) is little, only about 3-4mm is so surgical wound is little.Open the release knob (25) on the battery case, then the micromachine (3) in the box starts, and after variator slows down, promptly starts the drive disk assembly of sickle, until eccentric (20) rotation, drive slide block (14) and interior tubular cutter (6) are made set a distance along guide plate (18) reciprocating motion.
Adopt the advantage of pistol type lumbar intervertebral disc sickle to be:
1, battery-powered, safety, flexible is not with circumscripted power line;
2, the square hole of trocar sheath (5) pipe end can rotate pressure cap (7) and rotates the location, and cutting edge can accurately be aimed at needs the excision position;
3, trocar sheath (5) diameter has only 3-4mm, so surgical wound is little;
4, adopt axially back and forth cutting mode, thus downcut be organized into uniform bulk, can blocking pipe;
5, hand-held is convenient in the moulding of the approximate pistol of the profile of sickle;
6, sickle and battery case (2) adopt split-type structural, and two parts are connect by quick nut (17), are convenient to take off sickle and carry out sterilization under the high temperature.
Be made of battery case, variator, sickle three parts, sickle is connected by quick nut (17) with variator, thus before operation, can take off sickle fast, sterilization at high temperature, this is big characteristics.
Because pistol type lumbar intervertebral disc sickle is driven by aneroid battery, has then saved power line, has brought convenience to operation technique.
Claims (5)
1, pistol type lumbar intervertebral disc sickle is made of trocar sheath, interior tubular cutter, micromachine, speed change gear, and tubular cutter (6) is to be fixed in two transverse arms of F shape loose piece (14) in it is characterized in that, is screwed; Interior tubular cutter (a 6) end to the right connects a backwater cover (15), backwater joint (16); Interior tubular cutter (6) one ends left pass into water overcoat (12), water inlet cover (11), and trocar sheath (5) is mixed sealing ring (9) (10) again; Outside the pipe of interior tubular cutter (6), load onto trocar sheath (5), cover block (8), cover pressure cap (7) at last; The pipe top of the left end of trocar sheath (5) is sealed, and opens a square opening at the upside of pipe end; On the water inlet overcoat (12) water supply connector (4) is housed; Loose piece (14) is contained in the gap slot of guide plate (18), on the end of loose piece (14), insert a connecting rod (26), the other end of connecting rod (26) is inserted in the circular hole of driver blade (19), driver blade (19) is a circular piece that has two circular holes on diameter line, connecting rod (26) is inserted in a hole, another root axle is inserted in another hole, this axle inserts in the eccentric orfice of eccentric (20), insert the upper shaft lever of declutch shift shaft (21) in the circle center hole of eccentric (20), the following axostylus axostyle of declutch shift shaft (21) inserts in the axis hole of shift fork gear (22), and shift fork gear (22) is to be meshed with coaxial pinion (28) on the other gear (27);
And other gear (27) is meshed with the coaxial pinion (23) of driven gear (24), driven gear (24) is meshed with driving gear (29); Driving gear (29) is to be meshed with the travelling gear of a micromotor (3).
2, pistol type lumbar intervertebral disc sickle according to claim 1 is characterized in that quick nut (17) can screw with the screw thread in the outside, the upper end of variator, sickle and variator are integrated, and variator is incorporated with battery case (2).
3, pistol type lumbar intervertebral disc sickle according to claim 1, the diameter of tubular cutter (6) is 3-4mm in it is characterized in that; The length of tubular cutter (6) in the length of the trocar sheath (5) in being enclosed within outside the tubular cutter (6) slightly is longer than.
4, pistol type lumbar intervertebral disc sickle according to claim 1 is characterized in that having and can adorn four joint No.5 cells in the battery case (2) of lid (1), and box is established switch on the limit.
5, pistol type lumbar intervertebral disc sickle according to claim 1 is characterized in that pressure cap (7) cooperates with the trocar sheath (5) of interior tubular cutter (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98227122 CN2396780Y (en) | 1998-06-17 | 1998-06-17 | Gun type cutting instrument for lumbar partial removal of vertebral disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98227122 CN2396780Y (en) | 1998-06-17 | 1998-06-17 | Gun type cutting instrument for lumbar partial removal of vertebral disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2396780Y true CN2396780Y (en) | 2000-09-20 |
Family
ID=33977504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98227122 Expired - Fee Related CN2396780Y (en) | 1998-06-17 | 1998-06-17 | Gun type cutting instrument for lumbar partial removal of vertebral disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2396780Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725746A (en) * | 2017-01-20 | 2017-05-31 | 重庆西山科技股份有限公司 | Medical cutter sweep |
-
1998
- 1998-06-17 CN CN 98227122 patent/CN2396780Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725746A (en) * | 2017-01-20 | 2017-05-31 | 重庆西山科技股份有限公司 | Medical cutter sweep |
| CN106725746B (en) * | 2017-01-20 | 2023-08-29 | 重庆西山科技股份有限公司 | medical cutting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |