CN109602479A - The rigid sheath of surgical tool - Google Patents

Abstract

The rigid sheath of surgical tool, including casing, casing inner bearing installs rotation pipe, rotation pipe is equipped with the power device for rotating it, the upper end bearing of rotation pipe is connected and fixed the lower end of pipe, the periphery of fixing pipe is fixedly connected with the inner wall of casing, active tube joint is fixedly mounted in the upper end of fixing pipe, the lower section of rotation pipe is equipped with inner tube, inner tube, rotation pipe, casing, fixing pipe centerline collineation, the lower end of rotation pipe is flexibly connected with the upper end of inner tube by the first attachment device, inner tube is connected to by the first attachment device with rotation pipe and can be rotated with rotation pipe, the periphery of inner tube is set with outer tube, inner tube and outer tube centerline collineation.Matched cutter device is covered the present invention provides a kind of rigid sheath of novel surgical tool and with the rigid protective; angular adjustment is carried out in patient's operative incision convenient for the cutting head of cutter device, realizes that surgical tool is once inserted into the tissue to multiple angles, bone, is scraped, cut, cut off, grind or removed with other body substances.

Description

The rigid sheath of surgical tool

Technical field

The invention belongs to surgical tool field, specifically a kind of rigid sheath of surgical tool.

Background technique

It is commonly used in and scrapes, cuts, cuts off, grinds or remove tissue, bone, the surgical device cutting with other body substances The cut surface at end can not be adjusted when in use, and different cutting angles needs to be equipped with different cutting ends, both increase surgery The cost of equipment, and increase the time of surgical operation, increase the working strength of operative doctor, promote the risk of patient's operation, together When the fluid of cutter device, body substances remove channel (inner tube 7) and be easy blocking, need to stop to cut, by cutter device from disease Are removed by channel and is cleared up for fluid, body substances after being taken out in people's operative incision, further increases the surgical work time, is cut Device repeatedly passes in and out patient's operative incision, is easy to make operative incision by secondary damage, increases patient's pain, when extending patient's recovery Between, existing surgical tool is unable to satisfy actual demand, therefore we have invented a kind of rigid sheaths of novel surgical tool.

Summary of the invention

The present invention provides a kind of rigid sheath of surgical tool, to solve defect in the prior art.

The present invention is achieved by the following technical programs:

The rigid sheath of surgical tool, including casing, casing inner bearing install rotation pipe, and rotation pipe is equipped with the power for rotating it Device, the upper end bearing of rotation pipe are connected and fixed the lower end of pipe, and the periphery of fixing pipe is fixedly connected with the inner wall of casing, fixing pipe Upper end active tube joint is fixedly mounted, the lower section of rotation pipe is equipped with inner tube, inner tube, rotation pipe, casing, fixed tube hub line Collinearly, the lower end of rotation pipe is flexibly connected with the upper end of inner tube by the first attachment device, and inner tube and rotation pipe connect by first Connection device is connected to and can rotate with rotation pipe, and the periphery of inner tube is set with outer tube, inner tube and outer tube centerline collineation, and inner tube can It moving up and down along outer tube or is rotated in outer tube, the upper end of outer tube and the lower end of casing pass through the second attachment device active link, Inner tube is by rigid portion, the first flexible part, the first lower rigid portion group on first, and rigid portion and the first lower rigid portion pass through the on first The fixed connection of one flexible part, outer tube are made of rigid portion, the second flexible part, the second lower rigid portion on second, rigid portion on second It is connected to the second lower rigid portion by the fixation of the second flexible part, the first flexible part is located inside the second flexible part, the first flexible part It can be bent respectively to all directions with the second flexible part；Cut surface is opened up on front side of first lower rigid portion, the second lower rigid portion Front side opens up cutting window, cut surface by cutting window exposure, the lower end of inner tube and outer tube pass through respectively cut surface or cutting window with Outside is connected to, and several stay thimble groups are uniformly fixedly mounted in the periphery of rigid portion and the second flexible part, the second lower rigid portion on second, Stay thimble group does not influence the bending of the second flexible part, the pull ring vertical array and centerline collineation of the same pull ring group, pull ring group Interior difference activity installation drawstring, the pull ring of pull ring group top side are internal screw thread pull ring, difference threaded mounting bolts in internal screw thread pull ring, The lower end of bolt respectively with the upper end bearing of corresponding drawstring connect, the lower end of drawstring respectively with the drawing of corresponding pull ring group bottom side Ring is fixedly connected by the first spring；Fixing pipe, rotation pipe, the same outer hose, activity in outer hose are installed in activity in inner tube Inner flexible tube is installed, inner flexible tube can be slided up and down along outer hose, and activity installation stone dead wire in inner flexible tube, the upper end of inner flexible tube is fixed Screw is installed, screw internal screw thread installs screw rod, and the lower end of screw rod and the upper end bearing of stone dead wire connect, the lower part of stone dead wire periphery It is set with mild steel wire mesh tube, the upper end of mild steel wire mesh tube is fixedly connected with the lower end of inner flexible tube, and the lower end of stone dead wire, which is fixedly connected, wears The upper end of pricker, the lower end of mild steel wire mesh tube are fixedly connected with the upper end of puncture needle, and the periphery of rigid portion is set with rigidity on second The inner wall of protective case, rigid protective set is fixedly connected with the pull ring of corresponding pull ring group respectively, rigid under the second flexible part and second Property portion periphery be set with same third flexible part, the upper end of third flexible part is fixedly connected with the lower end that rigid protective covers, the The lower end of three flexible parts is fixedly connected with the top of the second lower rigid portion periphery by annular slab.

The rigid sheath of surgical tool as described above, first attachment device is by connecting tube, C-shaped channel, positioning Bar, rubber washer composition, the lower end of rotation pipe periphery are set with connecting tube, and connecting tube front side and the upper end of rear side open up central symmetry Fall C-shaped channel, C-shaped channel is open at one end, activity installation locating rod respectively in the other end of C-shaped channel, the inner end of locating rod It is fixedly connected respectively with the periphery of rotation pipe, locating rod can connect the lower end of inside pipe wall respectively along the corresponding sliding of falling C-shaped channel It is fixedly connected with the upper end of inner tube periphery, rubber washer, the top side of rubber washer and the bottom of rotation pipe is fixedly mounted in the top side of inner tube Side close contacting fit.

The rigid sheath of surgical tool as described above, second attachment device is by riffled tube, positioning pin, positioning Hole composition, the lower thread of casing periphery install riffled tube, the lower end of riffled tube inner wall and the upper end bearing of outer tube periphery It connects, location hole is opened up on the left of casing bottom side, positioning pin is installed in positioning hole activity, and positioning pin can glide along location hole Dynamic, the lower end of positioning pin is fixedly connected with the top side of outer tube.

The rigid sheath of surgical tool as described above, the periphery of rigid portion is equipped with length scale line on described second.

The rigid sheath of surgical tool as described above, the corresponding pull ring group in the second flexible part periphery are neighbouring Two pull rings between be fixedly connected by being sleeved on the second spring of drawstring periphery.

The rigid sheath of surgical tool as described above, the periphery of the bolt upper end opens up decorative crack.

The invention has the advantages that the present invention provides a kind of rigid sheath of novel surgical tool and with the rigid protective Matched cutter device is covered, angular adjustment is carried out in patient's operative incision convenient for the cutting head of cutter device, realizes surgery work The primary insertion of tool is scraped, is cut, is cut off, ground or is removed to the tissue of multiple angles, bone, with other body substances, and Surgical tool is under insert state and carries out penetrating cleaning, uses convenient for the continuity of surgical tool, can satisfy the market demand, It is suitble to promote.When using the present invention, outer hose is extracted out of fixing pipe, rotation pipe, inner tube together with inner flexible tube first, then passes through Fixing pipe is flexibly connected by active tube joint with the air inlet pipe of air extractor, then holds casing for the second lower rigid portion, second Flexible part is inserted into patient's operative incision, is made to cut window alignment position to be cut, is then given air extractor, rotation pipe respectively Power device be powered, rotation pipe by the first attachment device drive inner tube rotated in outer tube, i.e., rigid portion, first on first Relative to rigid portion, the second flexible part, the second lower rigid portion rotation on second, cut surface is being cut for flexible part, the first lower rigid portion Circumgyration incision in window is cut, needs substance to be cut to enter in inner tube by the connectivity part of cut surface and inner tube, while being evacuated dress Set and the fluid of cutting, body substances be sucked out by fixing pipe, rotation pipe, inner tube, complete the scraping, cut, cutting off of surgical operation, Mill or removal tissue, bone and other body substances；Start angle in second lower rigid portion and second between rigid portion axis It is zero, when needing to adjust the angle in the second lower rigid portion and second between rigid portion and being cut in order to cut surface, turns Dynamic second lower rigid portion lower end needs the bolt of bending direction, and bolt drives drawstring to move up, corresponding first spring and phase The first adjacent spring is compressed, and the first spring and the spring adjacent with the spring deviated from deviated from corresponding first spring is drawn Stretch, the first flexible part, the second flexible part lower end be bent respectively to the direction of the bolt turned, the second lower rigid portion and second Angle between upper rigid portion changes with the axis direction of the second flexible part lower end, and then can be realized cutting tool and be located at operation The adjusting of the lower end any direction of second lower rigid portion when inside notch, convenient for cut surface being carried out by cutting part to multi-angle Cutting；When needing penetrating cleaning inner tube, the air inlet pipe of air extractor is separated with fixing pipe, then outer hose is inserted into and is fixed In inner tube, inner flexible tube is inserted into outer hose for pipe, rotation pipe, and make puncture needle together with the lower end of stone dead wire, mild steel wire mesh tube, The lower end of inner flexible tube passes through the material to be cut for making interior blockage, and then rotary screw rod, moves up stone dead wire along inner flexible tube, soft The both ends of steel wire net cylinder are squeezed by opposite active force, and the diameter among mild steel wire mesh tube gradually increases, until screw rod be screwed onto it is most upper Square, the inner wall of periphery and inner tube among mild steel wire mesh tube is engaged, and then pulls inner flexible tube, the mild steel wire mesh tube being softened It pulls in the material to be cut of interior blockage in outer hose, completes penetrating cleaning of the cutter device in operative incision, reduction is cut The number for cutting device disengaging operative incision, is conducive to the recovery of patient's operative incision, reduces the pain of patient.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.

Fig. 1 is structural schematic diagram of the invention；Fig. 2 is the enlarged drawing of the A direction view of Fig. 1；Fig. 3 is I partial enlargement of Fig. 1 Figure；Fig. 4 is II partial enlarged view of Fig. 1；Fig. 5 is III partial enlarged view of Fig. 1.

Specific embodiment

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.

The rigid sheath of surgical tool, as shown, including casing 1,1 inner bearing of casing installs rotation pipe 2, rotation pipe 2 Equipped with the power device for rotating it, the upper end bearing of rotation pipe 2 is connected and fixed the lower end of pipe 3, the periphery of fixing pipe 3 and casing 1 inner wall is fixedly connected, and active tube joint 4 is fixedly mounted in the upper end of fixing pipe 3, and the lower section of rotation pipe 2 is equipped with inner tube 5, inner tube 5, rotation pipe 2, casing 1,3 centerline collineation of fixing pipe, the lower end of rotation pipe 2 and the upper end of inner tube 5 pass through the first attachment device 6 It is flexibly connected, inner tube 5 is connected to and can be rotated with rotation pipe 2 by the first attachment device 6 with rotation pipe 2, the periphery set of inner tube 5 Outer tube 7, inner tube 5 and 7 centerline collineation of outer tube are filled, inner tube 5 can be moved up and down along outer tube 7 or be rotated in outer tube 7, outer tube 7 Upper end and casing 1 lower end by 8 active link of the second attachment device, inner tube 5 is by rigid portion 51, the first flexible part on first 52, the first lower 53 groups of rigid portion, the first flexible part 52 are that can transmit driving torque, be bent to any direction and have axial branch The tubular structure of support force is existing well-known technique, first on rigid portion similar with the second flexible part 72, third flexible part 25 51 are connected to the first lower rigid portion 53 by the fixation of the first flexible part 52, and outer tube 7 is by rigid portion 71, the second flexible part on second 72, the second lower rigid portion 73 forms, and rigid portion 71 is connected to the second lower rigid portion 73 by the fixation of the second flexible part 72 on second, First flexible part 52 is located inside the second flexible part 72, and the first flexible part 52 and the second flexible part 72 can be respectively to all directions Bending；Cut surface 9 is opened up on front side of first lower rigid portion 53, the front side of the second lower rigid portion 73 opens up cutting window 10, and cut surface 9 is logical The exposure of cutting window 10 is crossed, inner tube 5 passes through cut surface 9 or cutting window 10 with the lower end of outer tube 7 respectively and is connected to outside, on second just Property portion 71 and the periphery of the lower rigid portion 73 of the second flexible part 72, second several stay thimble groups 11, stay thimble group is uniformly fixedly mounted 11 do not influence the bending of the second flexible part 72, the pull ring vertical array and centerline collineation of the same pull ring group 11, pull ring group 11 The interior installation drawstring 12 of activity respectively, the pull ring of 11 top side of pull ring group are internal screw thread pull ring, screw thread installation respectively in internal screw thread pull ring Bolt 13, the lower end of bolt 13 respectively with the upper end bearing of corresponding drawstring 12 connect, the lower end of drawstring 12 respectively with it is corresponding The pull ring of 11 bottom side of pull ring group is fixedly connected by the first spring 22；Fixing pipe 3, rotation pipe 2, activity installation is same in inner tube 5 A outer hose 14, activity installation inner flexible tube 15, inner flexible tube 15 can be slided up and down along outer hose 14 in outer hose 14, inner flexible tube 15 Screw 17 is fixedly mounted in interior activity installation stone dead wire 16, the upper end of inner flexible tube 15, and 17 internal screw thread of screw installs screw rod 18, screw rod 18 Lower end connect with the upper end bearing of stone dead wire 16, the lower part of 16 periphery of stone dead wire is set with mild steel wire mesh tube 19, mild steel wire mesh tube Diameter when 19 both ends are squeezed by opposite active force among mild steel wire mesh tube 19 is thicker, forms thin ends and thick middle tubular The upper end of structure, mild steel wire mesh tube 19 is fixedly connected with the lower end of inner flexible tube 15, and the lower end of stone dead wire 16 is fixedly connected with puncture needle The lower end of 20 upper end, mild steel wire mesh tube 19 is fixedly connected with the upper end of puncture needle 20, the periphery suit of rigid portion 71 on second Rigid protective set 24, rigid protective set 24 be tubular structure, rigid protective set 24 inner wall respectively with corresponding pull ring group 11 Pull ring is fixedly connected, and the periphery of the second flexible part 72 and the second lower rigid portion 73 is set with the same third flexible part 25, and third is soft Property portion 25 the lower end of upper end and rigid protective set 24 be fixedly connected, the lower end of third flexible part 25 with outside the second lower rigid portion 73 The top in week is fixedly connected by annular slab.The present invention provides a kind of rigid sheath of novel surgical tool and with the rigidity The matched cutter device of protective case carries out angular adjustment convenient for the cutting head of cutter device in patient's operative incision, realizes outer Section's tool is once inserted into the tissue to multiple angles, bone, is scraped, cut, cut off, grind or removed with other body substances, And penetrating cleaning is carried out in the case where surgical tool is in insert state, it is used convenient for the continuity of surgical tool, can satisfy market Demand is suitble to promote.When using the present invention, first by outer hose 14 together with inner flexible tube 15 from fixing pipe 3, rotation pipe 2, inner tube 5 Interior extraction, then be flexibly connected fixing pipe 3 with the air inlet pipe of air extractor by active tube joint 4, then hand-held casing 1 is by the In two lower rigid portions 73, the second flexible part 72 insertion patient's operative incision, cutting window 10 is set to be directed at position to be cut, then It is powered respectively to the power device of air extractor, rotation pipe 2, rotation pipe 2 drives inner tube 5 in outer tube 7 by the first attachment device 6 Interior rotation, i.e., the lower rigid portion 53 of rigid portion 51, the first flexible part 52, first is relative to rigid portion 71, second on second on first The lower rigid portion 73 of flexible part 72, second rotates, and the circumgyration incision in cutting window 10 of cut surface 9 needs substance to be cut to pass through The connectivity part of cut surface 9 and inner tube 5 enters in inner tube 5, while air extractor will be cut by fixing pipe 3, rotation pipe 2, inner tube 5 Fluid, body substances be sucked out, that completes surgical operation scrapes, cuts, cuts off, grinds or remove tissue, bone, and other body objects Matter；Start angle in second lower rigid portion 73 and second between 71 axis of rigid portion is zero, lower rigid when needing to adjust second When angle in portion 73 and second between rigid portion 71 is cut in order to cut surface 9, lower 73 lower end of rigid portion of rotation second The bolt 13 of bending direction is needed, bolt 13 drives drawstring 12 to move up, corresponding first spring 22 and the first adjacent bullet Spring 22 is compressed, and is drawn with the first spring 22 and the spring adjacent with the spring 22 deviated from that corresponding first spring 22 deviates from Stretch, the first flexible part 52, the second flexible part 72 lower end be bent respectively to the direction of the bolt 13 turned, the second lower rigid portion Angle on 73 and second between rigid portion 71 changes with the axis direction of 72 lower end of the second flexible part, and then can be realized cutting The adjusting of the lower end any direction of second lower rigid portion 73 when tool is located inside operative incision, convenient for cut surface 9 to multi-angle Cut by cutting part；When needing penetrating cleaning inner tube 5, the air inlet pipe of air extractor is separated with fixing pipe 3, then By in the insertion of outer hose 14 fixing pipe 3, rotation pipe 2, inner tube 5, inner flexible tube 15 is inserted into outer hose 14, and connect puncture needle 20 Lower end with the lower end of stone dead wire 16, mild steel wire mesh tube 19, inner flexible tube 15 passes through the material to be cut for blocking inner tube 5, then turns Dynamic screw rod 18, moves up stone dead wire 16 along inner flexible tube 15, and the both ends of mild steel wire mesh tube 19 are squeezed by opposite active force, soft Diameter among steel wire net cylinder 19 gradually increases, until screw rod 18 is screwed onto the top, periphery and inner tube 5 among mild steel wire mesh tube 19 Inner wall be engaged, then pull inner flexible tube 15, the mild steel wire mesh tube 19 being softened by the material to be cut for blocking inner tube 5 draw Enter in outer hose 14, complete penetrating cleaning of the cutter device in operative incision, reduces time of cutter device disengaging operative incision Number, is conducive to the recovery of patient's operative incision, reduces the pain of patient.

Specifically, as shown, the first attachment device 6 described in the present embodiment is by connecting tube 61, the C-shaped channel 62, fixed of falling Position bar 63, rubber washer 64 form, and the lower end of 2 periphery of rotation pipe is set with connecting tube 61, the upper end of connecting tube 61 front side and rear side Centrosymmetric C-shaped channel 62 is opened up, C-shaped channel 62 is open at one end, and activity installation is determined respectively in the other end of C-shaped channel 62 Position bar 63, the inner end of locating rod 63 are fixedly connected with the periphery of rotation pipe 2 respectively, and locating rod 63 can be respectively along corresponding C Type groove 62 is slided, and the lower end of 61 inner wall of connecting tube is fixedly connected with the upper end of 5 periphery of inner tube, and rubber is fixedly mounted in the top side of inner tube 5 Washer 64, the top side of rubber washer 64 and the bottom side close contacting fit of rotation pipe 2.When connecting rotation pipe 2 and inner tube 5, it will turn Dynamic pipe 2 is inserted into connecting tube 61, enters locating rod 63 fall in C-shaped channel 62 respectively along the open end of corresponding C-shaped channel 62, rubber Rubber gasket 64 is extruded, and is rotated further by the other end that connecting tube 61 makes locating rod 63 enter to fall C-shaped channel 62, at this time rubber washer 64 The bottom side close contacting fit of top side and rotation pipe 2 guarantees the connection air-tightness of inner tube 5 and rotation pipe 2, and inner tube 5 can be with Rotation pipe 2 rotates.

Specifically, as shown, the second attachment device 8 described in the present embodiment is by riffled tube 81, positioning pin 82, positioning Hole 83 forms, and the lower thread of 1 periphery of casing installs riffled tube 81, lower end and 7 periphery of outer tube of 81 inner wall of riffled tube Upper end bearing connects, and location hole 83 is opened up on the left of 1 bottom side of casing, activity installation positioning pin 82, positioning pin 82 in location hole 83 It can be slided up and down along location hole 83, the lower end of positioning pin 82 is fixedly connected with the top side of outer tube 7.Connecting sleeve 1 and outer tube 7 When, it is threadedly coupled riffled tube 81 with casing 1, until the top side of outer tube 7 and the bottom side of casing 1 are engaged, and tightens interior spiral shell Line pipe 81, cut surface 9 and cutting window 10 are opposite at this time, and cut surface 9 is by the cutting exposure of window 10, and outer tube 7 and casing 1 are relatively solid It is fixed, avoid outer tube 7 from rotating with inner tube 5.

Further, as shown, the periphery of rigid portion 71 is equipped with length scale line 21 on second described in the present embodiment. By length scale line 21 be convenient for 13 up and down adjustment distance of bolt measurement, and can be moved up according to side bolt 13 away from From the second flexible part 72 can be measured to the curved angle of the direction, the adjusting of angle is biased to convenient for cutting window 10.

Further, as shown, corresponding about the 11 pull ring group in 72 periphery of the second flexible part described in the present embodiment It is fixedly connected between two adjacent pull rings by being sleeved on the second spring 23 of 12 periphery of drawstring.Pull the drawstring 12 of side When, 12 periphery of drawstring and adjacent second spring 23 are compressed, drawstring 12 periphery opposite with the drawstring 12 and adjacent Two springs 23 are stretched, the reset after bending of the second flexible part 72 after resetting convenient for drawstring 12, while having certain support force, The second flexible part 72 is set to be not easy to increase rigid portion 71 and second on second to curving and descend angular adjustment between rigid portion 73 Stability afterwards, convenient for the fixation after 9 angular adjustment of cut surface.

Further, as shown, the periphery of 13 upper end of bolt described in the present embodiment opens up decorative crack.It is convenient for User directly turns bolt 13 with hand, convenient for the adjusting of 9 angle of cut surface, increases the usage experience of user.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features； And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims (6)

1. the rigid sheath of surgical tool, it is characterised in that: including casing (1), casing (1) inner bearing installs rotation pipe (2), turns Dynamic pipe (2) is equipped with the power device for rotating it, and the upper end bearing of rotation pipe (2) is connected and fixed the lower end of pipe (3), fixing pipe (3) periphery is fixedly connected with the inner wall of casing (1), and active tube joint (4) are fixedly mounted in the upper end of fixing pipe (3), rotation pipe (2) lower section is equipped with inner tube (5), inner tube (5), rotation pipe (2), casing (1), fixing pipe (3) centerline collineation, rotation pipe (2) Lower end and the upper end of inner tube (5) is flexibly connected by the first attachment device (6), inner tube (5) and rotation pipe (2) pass through the first company Connection device (6) is connected to and can rotate with rotation pipe (2), and the periphery of inner tube (5) is set with outer tube (7), inner tube (5) and outer tube (7) Centerline collineation, inner tube (5) can be moved up and down along outer tube (7) or the rotation in outer tube (7), the upper end of outer tube (7) and casing (1) lower end is by the second attachment device (8) active link, and inner tube (5) is by rigid portion (51), the first flexible part on first (52), first lower rigid portion (53) group, rigid portion (51) passes through the first flexible part (52) with first lower rigid portion (53) on first Fixed connection, outer tube (7) is made of rigid portion (71), the second flexible part (72), second lower rigid portion (73) on second, on second Rigid portion (71) is connected to second lower rigid portion (73) by the second flexible part (72) fixation, and the first flexible part (52) is located at second Flexible part (72) is internal, and the first flexible part (52) and the second flexible part (72) can be bent to all directions respectively；First is lower rigid Property portion (53) on front side of open up cut surface (9), cutting window (10) is opened up on front side of second lower rigid portion (73), cut surface (9) passes through Window (10) exposure is cut, inner tube (5) passes through cut surface (9) or cutting window (10) with the lower end of outer tube (7) respectively and is connected to outside, Several stay thimbles are uniformly fixedly mounted in rigid portion (71) and the periphery of the second flexible part (72), second lower rigid portion (73) on second Group (11), stay thimble group (11) do not influence the bending of the second flexible part (72), the pull ring vertical array of the same pull ring group (11) And centerline collineation, interior activity installation drawstring (12) respectively of pull ring group (11), the pull ring of pull ring group (11) top side is internal screw thread drawing Ring, in internal screw thread pull ring respectively threaded mounting bolts (13), the lower end of bolt (13) respectively with the upper end of corresponding drawstring (12) Bearing connection, the lower end of drawstring (12) connect with the pull ring of corresponding pull ring group (11) bottom side by the way that the first spring (22) are fixed respectively It connects；Fixing pipe (3), rotation pipe (2), the same outer hose (14) is installed in activity in inner tube (5), activity installation in outer hose (14) Inner flexible tube (15), inner flexible tube (15) can be slided up and down along outer hose (14), activity installation stone dead wire (16) in inner flexible tube (15), Screw (17) are fixedly mounted in the upper end of inner flexible tube (15), and screw (17) internal screw thread installs screw rod (18), the lower end of screw rod (18) with The upper end bearing of stone dead wire (16) connects, and the lower part of stone dead wire (16) periphery is set with mild steel wire mesh tube (19), mild steel wire mesh tube (19) upper end is fixedly connected with the lower end of inner flexible tube (15), and the lower end of stone dead wire (16) is fixedly connected with the upper of puncture needle (20) End, the lower end of mild steel wire mesh tube (19) are fixedly connected with the upper end of puncture needle (20), the periphery suit of rigid portion (71) on second Rigid protective set (24), the inner wall of rigid protective set (24) are fixedly connected with the pull ring of corresponding pull ring group (11) respectively, and second The periphery of flexible part (72) and second lower rigid portion (73) is set with the same third flexible part (25), third flexible part (25) it is upper End is fixedly connected with the lower end of rigid protective set (24), the lower end of third flexible part (25) and second lower rigid portion (73) periphery Top is fixedly connected by annular slab.

2. the rigid sheath of surgical tool according to claim 1, it is characterised in that: first attachment device (6) By connecting tube (61), C-shaped channel (62), locating rod (63), rubber washer (64) form, the lower end suit of rotation pipe (2) periphery Connecting tube (61), open up with the upper end of rear side on front side of connecting tube (61) it is centrosymmetric fall C-shaped channel (62), C-shaped channel (62) It is open at one end, activity installation locating rod (63) respectively in the other end of C-shaped channel (62), the inner end of locating rod (63) respectively with turn The periphery of dynamic pipe (2) is fixedly connected, and locating rod (63) can be slided along corresponding C-shaped channel (62) respectively, in connecting tube (61) The lower end of wall is fixedly connected with the upper end of inner tube (5) periphery, and rubber washer (64) are fixedly mounted in the top side of inner tube (5), rubber washer (64) the bottom side close contacting fit of top side and rotation pipe (2).

3. the rigid sheath of surgical tool according to claim 1, it is characterised in that: second attachment device (8) It is made of riffled tube (81), positioning pin (82), location hole (83), the lower thread of casing (1) periphery installs riffled tube (81), the lower end of riffled tube (81) inner wall is connect with the upper end bearing of outer tube (7) periphery, is opened up on the left of casing (1) bottom side Location hole (83), activity installation positioning pin (82), positioning pin (82) can be slided up and down along location hole (83) in location hole (83), The lower end of positioning pin (82) is fixedly connected with the top side of outer tube (7).

4. the rigid sheath of surgical tool according to claim 1, it is characterised in that: rigid portion (71) on described second Periphery be equipped with length scale line (21).

5. the rigid sheath of surgical tool according to claim 1, it is characterised in that: second flexible part (72) is outside By being sleeved on the second spring (23) of drawstring (12) periphery between week neighbouring two pull rings of corresponding pull ring group (11) It is fixedly connected.

6. the rigid sheath of surgical tool according to claim 1, it is characterised in that: described bolt (13) upper end Periphery opens up decorative crack.