CN105310744B

CN105310744B - Medical endoscope surgical clamp

Info

Publication number: CN105310744B
Application number: CN201410387532.5A
Authority: CN
Inventors: 李岱峰; 李烨
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-08-01
Filing date: 2014-08-01
Publication date: 2018-04-20
Anticipated expiration: 2034-08-01
Also published as: CN105310744A

Abstract

The present invention is the improvement on medical endoscope surgical clamp, surgical clamp of the existing surgical clamp particular with endoscope sheath, binding clip claw beam, which cannot be dismantled, to be difficult to clean, after improvement, binding clip fixed part and claw beam, binding clip movable part and drive link employ the detachable structure that soldering connection or screw thread or card slot are connected, claw beam is also to be detachably connected with clamp block, claw beam one end is welded with a transition spool piece, transition spool piece is by holding screw or is threadedly secured in clamp block, drive link one end is fixed with middleware, middleware is slidably matched in the hole of moving member, middleware passes through antioverloading safety device passing power with moving member, moving member is provided with carrying positive/negative thread in clamp block and passing through key connection, operating parts manipulates moving member by screw gear makes the multiple embodiments for being related to three kinds of form claw beams that the jaw of surgical clamp acts.Improved surgical clamp have quick detachable, easy cleaning, antioverloading, can self-locking, pen type shape, it is easy to operate the advantages of.

Description

Medical endoscope surgical clamp

Technical field

The present invention is the improvement on medical endoscope surgical clamp.

Background technology

No. 200910017109.5 patent applications of CN illustrate the structure of medical endoscope surgical clamp generally used now, existing Some surgical clamp binding clip and claw beam cannot be dismantled, and cleaning is difficult, in addition, existing surgical clamp is there are the flimsy problem of binding clip, Particularly binding clip is the problem of surgical clamp of linkage easily cuts off damage there are the axis of linkage, if the axis after damage Falling into can then have serious consequences in vivo.Tong head also has much room for improvement, and present tong head is the end for being driven rod bush Have the binding clip seat of concentric circular cross section, there is groove on binding clip seat, the center line of groove and circle is symmetrical, link assembly in groove, Endoscope sheath with transmission rod bush arrangement side by side up and down, it is cylindrical tangent, this cause the binding clip size under same size be difficult to do it is small, Connecting rod shaft size is small, and binding clip is fragile.Existing surgical clamp handle portion grips inconvenient and is not easy self-locking at any time, and present is micro- Invasive procedures are performed the operation using so-called single hole mostly, to be inserted into a hole more surgical clamp, are existed and are performed the operation what clamp holder mutually hindered Problem, these deficiencies are required for improving.

The content of the invention

The purpose of the present invention is：There is provided a kind of binding clip and claw beam can dismantle, and easy to clean, binding clip is hardly damaged, identical Binding clip size under specification is smaller, can be with self-locking, easy to operate medical endoscope surgical clamp.

Almost all of medical endoscope surgical clamp has a moving member, and moving member pulls binding clip to move by drive link Make, because the form of the different moving members of the kind of drive also has larger difference, but moving member pulls binding clip to act by drive link Functional structure be identical.Past moving member is to be fixedly connected with drive link, if increasing between moving member and drive link One middleware, middleware by safety device passing power, then can make the power of drive link transmission in safety with drive link In the range of, binding clip will not damage, while have the advantage that claw beam is easy to disassemble.

Following technical solution is employed for this：Medical endoscope surgical clamp, including binding clip, claw beam, clamp block, operating parts, biography Lever, moving member, moving member are connected with drive link, and drive link is connected with the movable part on binding clip, and claw beam one end is connected with clamp block The fixed part of the other end and binding clip connects, and operating parts manipulates moving member by transmission device makes the jaw folding of surgical clamp, it is special Sign is：Binding clip fixed part and claw beam, binding clip movable part and drive link be soldering, splicing or threaded connection, card slot be connected can Dismantling connection mode, claw beam are to be detachably connected with clamp block, and claw beam one end is welded with a transition spool piece, and transition spool piece passes through tight Determine screw or pin or screw thread, nut are fixed in clamp block, drive link is connected by middleware with moving member, is had on moving member Hole, Kong Zhongyu moving member of the middleware on moving member are slidably matched, and drive link is fixedly connected with middleware, middleware and movement Part passes through antioverloading safety device passing power.

Antioverloading safety device can be elastic clutch or safety pin, and the shear strength of safety pin is less than fair Perhaps the maximum power transmitted.Elastic clutch is the structure of elastic telescopic pin, is specifically spring forces ejector pin either brake pad The form of middleware is withstood, there is depression on middleware, the head portion of ejector pin is absorbed in depression, and ejector pin exits recessed when the load Fall into.

The end of drive link is welded with middleware, middleware in the hole of moving member end, it is vertical with hole have safety pin or The pin hole of elastic telescopic pin, in general, elastic telescopic pin has a tube-like envelope, there is compression spring, compresses spring in tube-like envelope Ejector pin is withstood, ejector pin can be the straight pin of bulb, sawtooth head square column pin, steel ball or brake pad, have internal thread on tube-like envelope Or external screw thread, turn tube-like envelope in itself or the pressure regulating screw on tube-like envelope top can adjust pressure size.Tube-like envelope can To be screwed or be welded and fixed.When the hole that moving member end fills elastic telescopic pin is deep enough, tube-like envelope can be saved, is pressed Contracting spring, ejector pin, pressure regulating screw are all in hole.

In the hole of claw beam insertion binding clip fixed part, fixed by soldering, binding clip movable part stretches out the connection of binding clip fixed part Bar is also that soldering is fixed with drive link.

The binding site of binding clip fixed part and claw beam has radial hole, and scolding tin is welded from Kong Zhongyu claw beams.

For moving member before clamp block, claw beam is endoscope sheath at the same time, and endoscope sheath is fixed on pincers later through moving member On seat, drive link is hollow, and drive link ring set is in the outside of endoscope sheath.

When the connecting rod that binding clip movable part stretches out binding clip fixed part is connected with drive link card slot, transmission of the ring set on claw beam The end of bar is welded with an eccentric bushing, there is the arcuation groove concentric with drive link on eccentric bushing, there is a piece of circular arc section Connection sheet, there is the protrusion coordinated with arcuation groove in connection sheet, and protrusion is in arcuation groove during work, the connection sheet and pincers of circular arc section The connecting rod that binding clip fixed part is stretched out on head movable part welds together.

The fixed part of binding clip is binding clip seat, and the axis direction of binding clip seat has the hole of bias, while as the pincers of endoscope sheath In eccentric orfice of the one end of bar on binding clip seat, groove arranged at the lower part of eccentric orfice, and the movable part on binding clip is parallel four-bar linkage Form, the clamping plate of shaft portion and hinged parallel four-bar linkage posterior nodal point is all in the groove of eccentric orfice lower part, under eccentric orfice The reverse side of the upper cell wall of the groove in portion has plane, and the distance of the plane to endoscope sheath opening center line is less than endoscope sheath opening Radius, has arc groove in the plane, and the nipper shaft being fixed on binding clip seat is multi-diameter shaft, end face and eccentric orfice lower part at ladder Groove upper cell wall plane it is concordant, the big end of multi-diameter shaft has arc groove, and the Boards wall of parallel four-bar linkage posterior nodal point has company Extension bar, connecting rod stretch out binding clip seat.

A hollow stud is all protruded in clamp block and moving member, the hand of spiral of two studs is on the contrary, operating parts is Regulating wheel form, operating parts both ends have screw hole to coordinate respectively with the two studs, and operating parts is manipulated by screw gear and moved Moving part makes the jaw folding of surgical clamp.

Protrude axis on the stud of clamp block or moving member, have hole on the stud of corresponding clamp block or moving member, clamp block is with moving Moving part prevents from rotating between each other by key connection or the connection of type face between the two.

Prominent axis is splined shaft on the stud of clamp block or moving member, and the hole on the stud of corresponding clamp block or moving member is Splined hole, clamp block are connected with moving member by spline.

It is fixed with tubular sheath in clamp block, operating parts is in ladder shaft-like, and multi-diameter shaft butt end is cylindrical with teeth or annular knurl, multi-diameter shaft Taper end it is most of in tubular sheath.

With a dismountable handle, there is pogo barrel in one end of handle, and pogo barrel is sleeved on tubular sheath or clamp block On, there is trip bolt on pogo barrel.

Have a sealing ring in claw beam or the drive link upper sliding sleeve being sleeved on outside claw beam, sealing ring it is cylindrical on have the annular close Sealing groove.

By the medical endoscope surgical clamp that designs of the present invention can with existing four link type, double-connecting rod type, spring clip hair style, Most of binding clips such as Wire sleeve type are supporting, and operating parts makes the transmission side of the jaw folding of surgical clamp by transmission device manipulation moving member Formula can also have a variety of.

Brief description of the drawings：

Fig. 1 is the medical endoscope hand with positive/negative thread operating parts wheeled with adjusting and endoscope sheath designed by the present invention The axonometric three-dimensional view of art pincers,

Fig. 2, Fig. 3, Fig. 4 are along the partial enlarged view of the sectional view of the axially symmetric plane of medical endoscope surgical clamp, are shown What is shown is the structure at surgical clamp rear portion, wherein：

Fig. 2 is that claw beam is endoscope sheath at the same time, structure of the drive link ring set outside endoscope sheath,

Fig. 3 is that claw beam is an independent hollow pipe, structure of the drive link in hollow pipe,

Fig. 4 be claw beam be endoscope sheath with transmission rod bush chain intermittent weld together with, drive link is in transmission rod bush Structure,

Fig. 5 is the axonometric three-dimensional view in binding clip portion,

Fig. 6 be drive link ring set outside endoscope sheath, the stereogram of drive link and binding clip movable part card slot connection structure,

Fig. 7 is the axonometric three-dimensional view of the medical endoscope surgical clamp with spring pocket handle and sealing ring,

In figure：1. 2. endoscope of endoscope deck focusing 3. clamp block of wheel, 4. tubular sheath, 5. splined shaft 6. is grasped Outside 10. drive link of workpiece 7. stud, 8. moving member, 9. middleware, 11. ejector pin 12. compression 13. tubulose of spring 18. positioning pin of shell 14. pressure regulating screw, 15. claw beam, 16. transition spool piece, 17. holding screw, 19. binding clip fixed part 20. 23. nipper shaft of eccentric bushing 21 connection sheet, 22 connecting rod, 24. safety pin, 25. hollow nut 26. is driven rod set 27. 28. sealing ring of collet

Embodiment

Referring to Fig. 1, Fig. 2, while it is fixed on after passing through the hole on moving member 8 as the claw beam 15 of endoscope sheath in clamp block 3, Middleware 9 is sleeved on one end of drive link 10 and is welded and fixed together with it, and 10 ring set of drive link of hollow tubular is in claw beam 15 Outside, be connected with moving member 8 by middleware 9, in the hole of middleware insertion moving member end, hung down with the hole of moving member end Directly there is the hole of fixed elastic telescopic pin, the tube-like envelope 13 of elastic telescopic pin, which inserts in the hole, to be welded and fixed, and has rank on tube-like envelope , there is screw thread in terraced hole in the hole on top, ejector pin 11 is the straight pin of ladder shaft-like bulb, turns the pressure regulating screw on tube-like envelope top 14 can adjust compression spring pressure size, and the middleware 9 coordinated with elastic telescopic pin is cylindric, and there is ring in the outer surface of cylinder Shape groove.

As shown in Figure 4, middleware is vertical with hole to have peace in the hole of moving member for the antioverloading safety device of safe pin type The pin hole of full pin 24, the interior insertion safety pin 24 of pin hole, by safety pin passing power, screw hole is arranged at the top of pin hole, is twisted on screw hole There is hollow nut 25 to prevent safety pin from coming off.The benefit of the antioverloading safety device of safe pin type is that working value is more accurate.

Claw beam has three kinds of forms it can be selected that the first is an independent hollow pipe, and hollow pipe is endoscope sheath at the same time, Drive link ring set is outside hollow pipe, as shown in Figure 2；It is for second endoscope sheath and transmission rod bush chain intermittent weld one Rise, drive link is in transmission rod bush, and as shown in Figure 4, the third is an independent hollow pipe, drive link in hollow pipe, As shown in Figure 3；One end of the claw beam of three kinds of forms is all welded with transition spool piece 16.

As shown in Figure 2, can be smooth casing to the first foregoing claw beam, transition spool piece 16, moving member is in clamp block Front, the claw beam as endoscope sheath are fixed in the hole of clamp block through moving member, are fixed in radial direction holding screw 17, this Kind fixed form is more convenient.Hollow bolt shape transition spool piece can also be made, can also be transition with nut axial restraint Swivel nut is made in casing, is screwed, and claw beam can be extracted out from rear portion at this time.

As shown in Figure 4, essentially identical with the first fixed form to foregoing second of claw beam, it is drive link not exist together Casing 26 is welded on the claw beam 15 as endoscope sheath, is not directly connected to clamp block, there is two holes on middleware 9, wherein Concentric hole and endoscope sheath sliding fit, drive link 10 are inserted into another hole and are welded and fixed with endoscope sheath.

As shown in Figure 3, to the third foregoing claw beam, moving member is at the rear of clamp block, and transition spool piece 16 is swivel nut pipe, mistake Cross casing threads and be fixed on clamp block outer end face, drive link pass through after clamp block with moving member by middleware and elastic telescopic pin bank into Antioverloading safety device connection.

The quick detachable connection mode that binding clip fixed part 19 and claw beam 15 be threaded connection or soldering, is glued, the solder of soldering The nontoxic solders such as tinbase or silver-based can be used.The hole of radial direction can be made in the fixed part of binding clip and the junction of claw beam, is welded Material is welded by hole and claw beam.Binding clip movable part is also soldering connection with drive link, and the movable part welding weldering of binding clip is connected with Extension bar 22, connecting rod stretch out the fixed part of binding clip, are brazed in extension and drive link, connecting rod is preferably the piece of circular arc section Shape, can also make hole in sheet connecting rod, and solder is welded by hole and drive link, and directly welding can also certainly.Tinbase Solder can be operated because fusing point is relatively low with electric iron, more convenient.

Gear division binding agent can be used during splicing.

When drive link is inside claw beam, binding clip fixed part and claw beam, binding clip movable part and drive link can all be screw threads Connection.At this time, there is screw hole on binding clip fixed part, have screw thread on claw beam, both are threadedly coupled, and melting weldering on binding clip movable part is welded with There are screw thread in one section of short connecting rod, the end of connecting rod, and the end of drive link is fixed with a connection swivel nut pipe, both pass through company Connect the connection of swivel nut pipe screw thread.This structure is also suitable soldering, and it is junction non-threaded not exist together, passes through soldering connection.

Drive link can also be connected with binding clip movable part by card slot connection structure, as shown in Figure 6：When drive link ring set When outside claw beam, the end of drive link 10 is welded with an eccentric bushing 20, has the arc concentric with drive link on eccentric bushing Shape dovetail groove, due to being eccentric so eccentric bushing outer surface part has slot part slotless, there is a piece of and cylindrical cooperation of eccentric bushing Circular arc section connection sheet 21, have the protrusion coordinated with dovetail groove in connection sheet, protrusion rotates inclined in dovetail groove during work Heart set to slotless part when protrusion can be separated with groove.The connection sheet 21 of circular arc section is fixed with stretching out binding clip on binding clip movable part The movable part connecting rod 22 in portion welds together, and has external screw thread to be connected with the internal thread on binding clip fixed part 19 on claw beam 15.Institute It can also be straight wall groove to state dovetail groove.

Referring to Fig. 5, the improvement to binding clip is as follows：Binding clip fixed part 19 is binding clip seat, the outer contour in the cross section of binding clip seat Line is circular, and the axis direction of binding clip seat has a hole of bias, in the eccentric orfice of one end of endoscope sheath on binding clip seat, eccentric orfice Lower part have a groove, the movable part on binding clip is the form of parallel four-bar linkage, shaft portion and hinged parallel four-bar linkage For the clamping plate of posterior nodal point all in the groove of eccentric orfice lower part, the reverse side of the upper cell wall of the groove of eccentric orfice lower part has plane, which is A part of hole wall formation of eccentric orfice is removed, the distance of the plane to endoscope sheath opening center line is less than endoscope sheath opening Radius, have the arc groove with the radius same radius of endoscope sheath opening, the pincers being fixed on binding clip seat 19 in the plane Mouthful axis 23 is multi-diameter shaft, and the end face at ladder is concordant with the cell wall plane of the groove of eccentric orfice lower part, that is to say, that the end at ladder Face is contacted with jaw connecting rod, and the big end of multi-diameter shaft has the arc groove with the radius same radius of endoscope sheath opening.Jaw closes Section after conjunction is circular, outer contour scope of the circular cross section without departing from binding clip seat cross section is seen from axial, after closure Associated jaw portion blocks endoscope sheath opening, and jaw blocks elimination after opening.Hole on the bottom of the groove of eccentric orfice lower part can be Circular hole can also be fan-shaped circular hole, and fan-shaped circular hole and the connecting rod 22 of circular arc section sheet coordinate.

It is the embodiment using the positive/negative thread kind of drive shown in Fig. 1 to Fig. 4：

Referring to Fig. 1 to Fig. 4, clamp block 3 is in hollow ladder shaft-like, and thinner one end is hollow stud, and there is spiral shell in thicker one end Hole, endoscope focusing wheel 2 are threadedly coupled with it, and the other end of endoscope focusing wheel protrudes axis, there is annular groove, endoscope on axis There is the screw hole of radial direction on deck 1, there is positioning pin 18 in screw hole, endoscope deck 1 is inserted in after axis positioning pin 18 being screwed into annular groove Connection, moving member 8 are also hollow ladder shaft-like, and the thinner one end of multi-diameter shaft is hollow stud, the spiral shell on moving member 8 and clamp block 3 The hand of spiral of column is on the contrary, screw thread can be multiple thread, and operating parts 6 is regulating wheel form, and there is screw hole difference at operating parts both ends Coordinate with the two studs, rotating operation part 6 can move axially moving member 8, the screw hole at 6 both ends of operating parts of regulating wheel form Can fill in two different nut-weldings of rotation direction respectively at the both ends of tubular regulating wheel to fix to be formed.

For balance rotating power, clamp block is connected with moving member key connection or type face, at this time, is dashed forward on the stud of clamp block or moving member Going out has axis, there is hole on the stud of corresponding clamp block or moving member, and clamp block is connected by key connection or type face between the two with moving member Take over control only that rotation, type face can be four directions, hexagonal etc. between each other, when key connection, uses spline more convenient, at this time, clamp block or Prominent axis is splined shaft on the stud of moving member, and the hole on the stud of corresponding clamp block or moving member is splined hole, clamp block with Moving member is connected by spline, and spline can use non-standard rectangular spline to use triangular tooth spline.

Clamp block or moving member can use welding procedure to manufacture when being connected using spline, at this time the stud of clamp block or moving member The splined shaft 5 of upper protrusion is that corresponding spline housing is stud 7 in itself, and stud welding is fixed on clamp block or movement in welding On part.

For convenience of gripping, tubular sheath 4 is fixed with clamp block 3, operating parts 6 is in ladder shaft-like, and multi-diameter shaft butt end is cylindrical to be had Wave-formed mouth, the major part of the taper end of multi-diameter shaft is in tubular sheath.

Referring to Fig. 7, a quick detachable handle can be carried, there is collet 27 in one end of handle, and collet is sleeved on On tubular sheath or clamp block, there is trip bolt on collet, handle can be dismantled by unclamping trip bolt.Collet structure It is：Axial hole, hole and the cylindrical cooperation of tubular sheath or clamp block are put on outside column, it is axially and symmetrically flat above axially bored line Face is provided with one of narrow slot, and narrow slot is communicated with hole, vertical with cell wall plane to have two through holes, and through hole half has screw thread half without spiral shell Line, trip bolt are screwed into from one end of non-threaded.The bottom surface You Liangge holes of column overcoat, U-shaped handle weld after being inserted into two holes It is fixed.

Sometimes need in artificial pneumoperitoneum menisectomy, it is necessary to seal, at this time in claw beam or the drive link being sleeved on outside claw beam Upper sliding sleeve has a sealing ring 28, sealing ring it is cylindrical on have the seal grooves of O-ring seals, the cylindrical and operation path of sealing ring On sealing shroud coordinate, sealing ring it is cylindrical it is upper also have one of annular slot, flexible protrusion on the sealing shroud on operation path Card slot can be absorbed in, prevents sealing ring from deviating from, inner circle and the claw beam or the drive link being sleeved on outside claw beam of sealing ring form gap Sealing, when work, spread medical ventolin and reach airtight effect, and the inner circle of sealing ring is preferably formed with a few road annular grooves, enhancing sealing effect Fruit.

Claims

1. a kind of medical endoscope surgical clamp, including binding clip, claw beam, clamp block, operating parts, drive link, moving member, moving member is with passing Lever connects, and drive link is connected with the movable part on binding clip, and claw beam one end is connected the other end with clamp block and the fixed part of binding clip connects Connect, operating parts manipulates moving member by transmission device makes the jaw folding of surgical clamp, it is characterised in that：Binding clip fixed part and pincers Bar, binding clip movable part and drive link are the detachable connection that soldering, splicing or threaded connection, card slot are connected, claw beam and pincers Seat is to be detachably connected, and claw beam one end is welded with a transition spool piece, and transition spool piece passes through holding screw or pin or screw thread, spiral shell Mother is fixed in clamp block, and drive link is connected by middleware with moving member, there is hole, hole of the middleware on moving member on moving member In be slidably matched with moving member, drive link is fixedly connected with middleware, and middleware is passed with moving member by antioverloading safety device Graduating power, claw beam are inserted into the hole of binding clip fixed part, are fixed by being brazed, and binding clip movable part is also soldering fixation with drive link, Solder used is tin solder, and the binding site of binding clip fixed part and claw beam has radial hole, and scolding tin is welded from Kong Zhongyu claw beams.

2. medical endoscope surgical clamp according to claim 1, it is characterised in that：One is all protruded on clamp block and moving member A hollow stud, the hand of spiral of two studs is on the contrary, operating parts both ends have screw hole with the cooperation of the two studs, to operate respectively Part manipulates moving member by screw gear makes the jaw folding of surgical clamp, and axis is protruded on the stud of clamp block or moving member, There is hole on the stud of corresponding clamp block or moving member, clamp block is connected by key connection or type face between the two with moving member prevents phase Rotated between mutually, prominent axis is splined shaft on the stud of clamp block or moving member, on the stud of corresponding clamp block or moving member Hole is splined hole, and clamp block is connected with moving member by triangular tooth spline, prominent splined shaft on the stud of clamp block or moving member It is that corresponding spline housing is stud in itself, and stud welding is fixed on clamp block or moving member, and moving member is in clamp block in welding Behind, drive link is hollow, and drive link is in the inside of claw beam.