CN109758223B - Minimally invasive surgical instrument using PEEK connecting rod - Google Patents
Minimally invasive surgical instrument using PEEK connecting rodDownload PDFInfo
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- CN109758223B CN109758223BCN201910035831.5ACN201910035831ACN109758223BCN 109758223 BCN109758223 BCN 109758223BCN 201910035831 ACN201910035831 ACN 201910035831ACN 109758223 BCN109758223 BCN 109758223B
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Abstract
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a minimally invasive surgical instrument using PEEK connecting rods.
Background
The spine screw rod internal fixation operation is one of the operations for resetting and fixing bones, and in the open operation, a connecting rod is placed in a U-shaped groove of a pedicle screw cap through a rod holder.
With the development of medical technology, minimally invasive technology is developed in spinal surgery, compared with open surgery, minimally invasive surgery has the advantages of small surgical wound, small injury and pain, short postoperative recovery time, quicker recovery, less bleeding and low risk of secondary injury in the operation.
Present holding the pole ware use loaded down with trivial details, put excellent difficulty, the connecting rod of traditional material is not high with the rate of fusion of bone, fuses the adjacent stage in clearance and takes place to degenerate easily, and the connecting rod rubs with other fixed systems take place easily, leads to the lumbago, and the connecting rod of traditional material is buckled according to clinical experience in the art moreover, has that the degree of curvature is inconsistent and the degree of curvature is not conform to lumbar vertebrae physiological curvature, forms the increase of local stress, leads to the lumbago.
Disclosure of Invention
The invention aims to provide a minimally invasive surgical instrument using PEEK connecting rods, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an use minimal access surgery apparatus of PEEK connecting rod, this minimal access surgery apparatus include the connecting rod and with the pole holder that the connecting rod cooperation was used, the connecting rod is including the connecting rod pole head, the connecting rod body of rod and the joint that connect gradually, the connecting rod pole head is the cone shape, the connecting rod body of rod shape is the arc, connects for cylindrical shape.
Among the above-mentioned technical scheme, the connecting rod pole head is the cone shape, pierces the soft tissue more conveniently when using, pierces through skin more easily and gets into subcutaneously, and the connecting rod body of rod shape is the arc, and this connecting rod body of rod is the pre-bending type body of rod, accords with lumbar vertebrae physiological curvature, connects to be cylindrical shape, and cylindrical shape is more wear-resisting, and is not fragile.
As preferred scheme, the connecting rod body of rod is the PEEK material body of rod, holds the pole ware and includes the sleeve, ejector pin and screw rod, and the sleeve is provided with the department of bending, and the sleeve is inside to be cavity, and ejector pin and screw rod insert in the sleeve, and the ejector pin sets up in the below of the department of bending, and the screw rod sets up in the top of the department of bending, and the screw rod contacts with the ejector pin in the department of bending, and the sleeve is close to the one end of ejector pin and.
In the technical scheme, the effect of clamping the connecting rod is realized. The connecting rod body is made of PEEK material, the PEEK is polyether-ether-ketone, the connecting rod is special engineering plastic with excellent performance, the PEEK material has high strength and low dissolution, the PEEK material body has good fusion with a human body, the screw rod extrudes the ejector rod in the sleeve, the ejector rod compresses the connecting rod on the sleeve, and the ejector rod and the sleeve are matched to clamp the connecting rod; the sleeve is provided with the department of bending, and the department of bending is used for restricting the position of ejector pin and screw rod on the one hand, and on the other hand, the angle of bending of the department of bending is at 10 degrees to 15 degrees for the sleeve is whole roughly to be shaft-like, thereby holds the pole ware and just in time can pass many pedicle of vertebral arch nails vertical when downwards.
As preferred scheme, the sleeve includes cover barrel head and cover barrel, cover barrel head is provided with the sleeve recess, cover barrel head is provided with the sleeve arch that uses with the cooperation of sleeve recess, be provided with first guiding hole on sleeve recess and the sleeve arch, be provided with first round pin axle in the first guiding hole, first round pin axle is used for connecting cover barrel head and cover barrel, the one end that cover barrel kept away from cover barrel head is provided with the internal thread, be provided with on the screw rod with the interior screw-thread fit's of cover barrel external screw thread, the opening setting of clamping connection pole is overhead at the sleeve, be provided with limit stop on the opening.
In above-mentioned technical scheme, cover the cartridge and cover the barrel and connect through sleeve arch and sleeve recess, and through the first round pin axle of welding, cover cartridge and cover barrel fixed connection together, cover cartridge and cover barrel not the integral type structure but through welded connection together, be big in order to cooperate ejector pin both ends diameter, the little structure of middle diameter. The screw rod passes through threaded connection with the cover barrel, conveniently reaches the purpose of extrusion ejector pin through screwing up the screw rod, and limit stop is used for the position of restriction connecting rod for ejector pin and cover barrel head just in time press from both sides the joint of tight connecting rod.
As preferred scheme, the ejector pin includes the ejector pin body of rod and ejector pin pole head, the ejector pin body of rod includes ejector pin boss and ejector pin pole body, the one end that the ejector pin boss was kept away from to the ejector pin pole body is provided with the assembly recess that uses with the protruding cooperation of assembly, the other end of ejector pin pole head is provided with the tight recess of clamp that uses with the connecting rod cooperation, the diameter of ejector pin boss, the diameter of ejector pin pole head is greater than the diameter of ejector pin pole body, be provided with the spring on the ejector pin pole body, the spring is located between ejector pin boss and sleeve arch, be provided with the second guiding hole on assembly arch and the assembly recess, be provided with the second round pin axle in the second guiding hole.
In the technical scheme, the diameter of the ejector rod boss and the diameter of the ejector rod head are larger than that of the ejector rod body, namely the diameters of two ends of the ejector rod are large, and the diameter of the middle of the ejector rod is small, so that the ejector rod cannot be directly inserted into the sleeve; when the rod is placed, the screw rod is unscrewed, the ejector rod automatically bounces due to the elastic force of the spring, so that the ejector rod has no pressing acting force on the connecting rod, and the connecting rod is separated from the rod holder.
As the preferred scheme, the rod holder further comprises a handle and a handle connecting rod, two ends of the handle connecting rod are respectively connected with the sleeve and the handle, the handle connecting rod comprises a first connecting rod, a second connecting rod and a fixing ball, the first connecting rod and the second connecting rod are hollow, a first fixing piece and a first fixing rod are arranged in the first connecting rod, a second fixing piece and a second fixing rod are arranged in the second connecting rod, the fixing ball is provided with a clamping groove, a first clamping ball and a second clamping ball are arranged in the clamping groove, one end of the first fixing rod is in threaded connection with the first fixing piece, the other end of the first fixing rod penetrates through the clamping groove to be fixedly connected with the first clamping ball, one end of the second fixing rod is in threaded connection with the second fixing piece, and the other end.
In the above technical scheme, through between first stationary blade and the first dead lever, can fix the angle between first connecting rod and the fixed ball, with between second stationary blade and the second dead lever, can fix the angle of second connecting rod and fixed ball, and then can make up into the angle that the doctor wanted to use with first connecting rod and second connecting rod.
As the preferred scheme, be provided with the connecting block on the sleeve, be provided with connecting groove on the connecting block, be provided with on the handle connecting rod with the connecting groove cooperation use connect the arch, connecting groove carries out circumference welding with the protruding department of connection, handle connecting rod and handle pass through circumference welded connection.
In above-mentioned technical scheme, sleeve and handle connecting rod, handle connecting rod all are connected through the circumference welding with the handle for this hold the pole ware more firm.
As the preferred scheme, be provided with the third guiding hole on the cover barrel, be provided with the backing pin of restriction screw rod in the third guiding hole, the screw rod is kept away from the one end head of bending department and is equipped with interior cross hole.
In the technical scheme, the stop pin is used for preventing the screw from falling off from the sleeve; the screw is rotated by the screwdriver acting on the cross hole, so that the labor is saved and the convenience is realized; the cross hole universality is strong, and a special screwdriver does not need to be additionally customized.
As preferred scheme, the connecting rod pole head passes through threaded connection with the connecting rod body of rod, the connecting rod body of rod and joint.
Preferably, the tie rod head and the joint are made of TC4 material.
In the technical scheme, the TC4 material is a titanium alloy material and has good comprehensive mechanical properties, and the TC4 material can be used for developing and positioning under X-rays, so that when minimally invasive surgery is performed, the connecting rod head and the joint can be used for developing and positioning under X-rays, and the connecting rod is more convenient to use.
Compared with the prior art, the invention has the beneficial effects that:
1. the connecting rod body is made of PEEK material, the fusion rate with human bones is high, the degeneration of the fusion gap in the adjacent stage is slowed down, and the connecting rod body is not easy to rub other fixing systems; the connecting rod head and the joint are made of TC4 materials, so that the connecting rod head and the joint can be positioned by developing under X-ray during minimally invasive surgery, and the connecting rod is more convenient to use.
2. The sleeve is approximately in the shape of a rod part, so that the rod holder can just penetrate through a plurality of pedicle screws when vertically downwards; the screw is rotated by the screwdriver acting on the cross hole, so that the ejector rod clamps or loosens the connecting rod, and the rod placing operation is simpler; the clamping groove of the ejector rod head is matched with the connecting rod, so that the rod holder can clamp the connecting rod more firmly.
3. The rod holder solves the problem that semi-rigid fixation cannot be applied to minimally invasive surgery.
Drawings
FIG. 1 is a schematic structural view of a minimally invasive surgical instrument using PEEK connecting rods according to the present invention;
FIG. 2 is a schematic structural view of a connecting rod of a minimally invasive surgical instrument using PEEK connecting rods according to the present invention;
FIG. 3 is an enlarged schematic view of a minimally invasive surgical instrument A using PEEK connecting rods according to the present invention;
FIG. 4 is an enlarged view of a minimally invasive surgical instrument B using PEEK connecting rods according to the present invention;
FIG. 5 is a schematic view of the sleeve body of a minimally invasive surgical instrument using PEEK connecting rods according to the present invention;
FIG. 6 is a three-dimensional view of a sleeve head of a minimally invasive surgical instrument of the present invention using PEEK connecting rods;
FIG. 7 is a schematic structural view of a mandril body of a minimally invasive surgical instrument using PEEK connecting rods according to the present invention;
FIG. 8 is a schematic structural view of a mandril head of a minimally invasive surgical instrument using PEEK connecting rods.
In the figure: 1-connecting rod, 2-sleeve head, 3-ejector rod head, 4-ejector rod body, 5-screw rod, 6-third guide hole, 7-first fixing piece, 8-fixing ball, 9-second fixing piece, 10-handle, 11-second connecting rod, 12-second fixing rod, 13-first fixing rod, 14-first connecting rod, 15-cross hole, 16-sleeve body, 17-spring, 18-first guide hole, 19-second guide hole, 20-second clamping ball, 21-first clamping ball, 22-clamping groove, 23-connecting groove, 24-limit stop, 25-ejector rod boss, 26-assembling protrusion, 27-ejector rod body, 28-connecting rod head, 29-connecting rod body, 30-joint, 31 sleeve projection.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, in an embodiment of the present invention, a minimally invasive surgical instrument using a PEEK connecting rod includes a connecting rod 1 and a rod holder used in cooperation with the connecting rod 1, the connecting rod 1 includes a connectingrod head 28, a connectingrod body 29, and a joint 30, which are sequentially connected, the connectingrod head 28 is conical, the connectingrod body 29 is a PEEK rod body, theconnecting rod body 29 is arc-shaped, and thejoint 30 is cylindrical.
Among the above-mentioned technical scheme, connectingrod pole head 28 is the cone shape, pierces the soft tissue more conveniently when using, pierces through skin more easily and gets into the subcutaneous, and the connecting rod body ofrod 29 is the PEEK material body of rod, and the PEEK material has high strength and low dissolution nature, and the PEEK material body of rod has fine integration nature with the human body, and the connecting rod body ofrod 29 shape is the arc, and the PEEK material body of rod accords with the physiological curvature of lumbar vertebrae for the pre-bending type body of rod.
Thejoint 30 is cylindrical, which is more wear resistant and less prone to damage.
The rod holder comprises a sleeve, an ejector rod and ascrew rod 5, the sleeve is provided with a bending part, the sleeve is hollow, the ejector rod and thescrew rod 5 are inserted into the sleeve, the ejector rod is arranged below the bending part, thescrew rod 5 is arranged above the bending part, thescrew rod 5 is in contact with the ejector rod at the bending part, and an opening for clamping the connecting rod 1 is formed in one end, close to the ejector rod, of the sleeve.
In the above technical scheme, the effect of clamping the connecting rod 1 is realized. Thescrew rod 5 extrudes a mandril in the sleeve, the mandril tightly presses the connecting rod 1 on the sleeve, and the mandril and the sleeve are matched to clamp the connecting rod 1; the sleeve is provided with the department of bending, and the department of bending is used for restricting the position of ejector pin andscrew rod 5 on the one hand, and on the other hand, the angle of bending of the department of bending is at 10 degrees to 15 degrees for the sleeve is whole roughly to be shaft-like, thereby holds the pole ware and just in time can pass many pedicle of vertebral arch nails vertical when downwards.
The sleeve includessleeve head 2 andsleeve body 16,sleeve head 2 is provided with the sleeve recess,sleeve head 2 is provided with thesleeve arch 31 that uses with the cooperation of sleeve recess, be provided with first guidinghole 18 on sleeve recess and thesleeve arch 31, be provided with first round pin axle in the first guidinghole 18, first round pin axle is used for connectingsleeve head 2 andsleeve body 16, the one end thatsleeve body 16 kept away fromsleeve head 2 is provided with the internal thread, be provided with on thescrew rod 5 with the interior screw-thread fit's ofsleeve body 16 external screw thread, the opening setting of clamping connection pole 1 is onsleeve head 2, be provided withlimit stop 24 on the opening.
In above-mentioned technical scheme,cover barrel head 2 andsleeve body 16 are connected throughsleeve arch 31 and sleeve recess, and through the first round pin axle of welding,cover barrel head 2 andsleeve body 16 fixed connection together,cover barrel head 2 andsleeve body 16 not integral type structure but through welded connection together, are big in order to cooperate ejector pin both ends diameter, the little structure of middle diameter. Thescrew rod 5 is in threaded connection with thesleeve body 16, the purpose of extruding the ejector rod is achieved conveniently by screwing thescrew rod 5, and thelimit stop 24 is used for limiting the position of the connecting rod 1, so that the ejector rod and thesleeve head 2 just clamp thejoint 30 of the connecting rod 1.
The ejector pin includes theejector pin body 4 and ejectorpin pole head 3, theejector pin body 4 includesejector pin boss 25 and ejectorpin pole body 27, the one end thatejector pin boss 25 was kept away from to ejectorpin pole body 27 is provided with assembly protruding 26, the one end of ejectorpin pole head 3 is provided with the assembly recess that uses with the protruding 26 cooperation of assembly, the other end of ejectorpin pole head 3 is provided with the clamp groove who uses with the connecting rod cooperation, the diameter ofejector pin boss 25, the diameter of ejectorpin pole head 3 is greater than the diameter of ejectorpin pole body 27, be provided withspring 17 on ejectorpin pole body 27,spring 17 is located betweenejector pin boss 25 andsleeve arch 31, be provided with second guidinghole 19 on assembly protruding 26 and the assembly recess, be provided with the second round pin axle in the second guidinghole 19.
In the above technical solution, the diameter of theejector rod boss 25 and the diameter of theejector rod head 3 are larger than the diameter of theejector rod body 27, that is, the diameter of both ends of the ejector rod is large, and the diameter of the middle of the ejector rod is small, so that the ejector rod cannot be directly inserted into the sleeve, when assembling, theejector rod body 4 is first placed into thesleeve body 16, then thesleeve head 2 is connected with thesleeve body 16, finally theejector rod body 4 and theejector rod head 3 are connected through the assemblingprotrusion 26 and the assembling groove, and theejector rod body 4 and theejector rod head 3 are fixedly connected together by welding the second pin shaft; when the rod placing operation is carried out, thescrew rod 5 is unscrewed, the ejector rod automatically bounces due to the elastic force of thespring 17, so that the ejector rod has no pressing acting force on the connecting rod 1, and the connecting rod 1 is separated from the rod holder.
The rod holder further comprises ahandle 10 and a handle connecting rod, two ends of the handle connecting rod are respectively connected with the sleeve and thehandle 10, the handle connecting rod comprises a first connectingrod 14, a second connectingrod 11 and afixing ball 8, the inside of the first connectingrod 14 and the inside of the second connectingrod 11 are hollow, afirst fixing piece 7 and afirst fixing rod 13 are arranged in the first connectingrod 14, asecond fixing piece 9 and asecond fixing rod 12 are arranged in the second connectingrod 11, thefixing ball 8 is provided with aclamping groove 22, afirst clamping ball 21 and asecond clamping ball 20 are arranged in theclamping groove 22, one end of thefirst fixing rod 13 is in threaded connection with thefirst fixing piece 7, the other end of the first fixing rod penetrates through theclamping groove 22 and is fixedly connected with thefirst clamping ball 21, one end of thesecond fixing rod 12 is in threaded connection with thesecond fixing piece 9, and.
In the above technical solution, the angle between thefirst link 14 and thefixing ball 8 can be fixed by thefirst fixing piece 7 and thefirst fixing rod 13, the angle between thesecond link 11 and thefixing ball 8 can be fixed by thesecond fixing piece 9 and thesecond fixing rod 12, and further thefirst link 14 and thesecond link 11 can be combined into an angle that the doctor wants to use.
The sleeve is provided with a connecting block, the connecting block is provided with a connectinggroove 23, a connecting bulge matched with the connectinggroove 23 is arranged on the handle connecting rod, the connectinggroove 23 and the connecting bulge are welded in the circumferential direction, and the handle connecting rod is connected with thehandle 10 in a circumferential welding mode.
In the above technical scheme, sleeve and handle connecting rod, handle connecting rod andhandle 10 all are connected through the circumference welding for this hold the pole ware more firm.
Athird guide hole 6 is formed in thesleeve body 16, a stop pin for limiting thescrew 5 is arranged in thethird guide hole 6, and aninner cross hole 15 is formed in the head of one end, far away from the bending position, of thescrew 5.
In the technical scheme, the stop pin is used for preventing thescrew 5 from falling off from the sleeve; thescrew 5 is rotated by the screwdriver acting on thecross hole 15, so that the labor is saved and the convenience is realized; thecross hole 15 is strong in universality, and a special screwdriver does not need to be additionally customized.
The connectingrod head 28 and the connectingrod body 29 are connected through threads, and the connectingrod body 29 and the joint 30 are connected through threads.
The tie-rod head 28 and the joint 30 are made ofTC 4.
In the above technical scheme, the TC4 material can be positioned by developing under X-ray, so that the connectingrod head 28 and the joint 30 can be positioned by developing under X-ray when minimally invasive surgery is performed, and the connecting rod 1 is more convenient to use.
When the minimally invasive surgical instrument is used, the connecting rod 1 is inserted into the opening of thesleeve head 2, thescrew rod 5 is rotated to push the connecting rod forward and extrude the ejector rod until the arc-shaped groove of theejector rod head 3 is tightly pressed on the connecting rod 1, the connecting rod 1 is fixed on the rod holder, when the rod holding operation is carried out, thescrew rod 5 is unscrewed, the ejector rod is bounced in the direction away from the connecting rod 1 under the elastic force of thespring 17, the ejector rod does not have the pressing acting force on the connecting rod 1, the connecting rod 1 is separated from the rod holder, and the rod holding operation is completed.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. A minimally invasive surgical instrument using PEEK connecting rods is characterized in that: the minimally invasive surgical instrument comprises a connecting rod (1) and a rod holder matched with the connecting rod (1) for use, wherein the connecting rod (1) comprises a connecting rod head (28), a connecting rod body (29) and a joint (30) which are sequentially connected, the connecting rod head (28) is in a conical shape, the connecting rod body (29) is in an arc shape, and the joint (30) is in a cylindrical shape;
the connecting rod body (29) is a PEEK material rod body, the rod holder comprises a sleeve, an ejector rod and a screw rod (5), the sleeve is provided with a bending part, the sleeve is hollow, the ejector rod and the screw rod (5) are inserted into the sleeve, the ejector rod is arranged below the bending part, the screw rod (5) is arranged above the bending part, the screw rod (5) is in contact with the ejector rod at the bending part, and one end of the sleeve, which is close to the ejector rod, is provided with an opening for clamping the connecting rod (1);
the sleeve comprises a sleeve head (2) and a sleeve body (16), the sleeve body (16) is provided with a sleeve groove, the sleeve head (2) is provided with a sleeve protrusion (31) matched with the sleeve groove for use, the sleeve groove and the sleeve protrusion (31) are provided with a first guide hole (18), a first pin shaft is arranged in the first guide hole (18), the first pin shaft is used for connecting the sleeve head (2) and the sleeve body (16), one end, away from the sleeve head (2), of the sleeve body (16) is provided with an internal thread, an external thread matched with the internal thread of the sleeve body (16) is arranged on the screw rod (5), an opening of the clamping connecting rod (1) is arranged on the sleeve head (2), and a limit stop (24) is arranged on the opening.
2. The minimally invasive surgical instrument using PEEK connecting rods according to claim 1, characterized in that: the ejector rod comprises an ejector rod body (4) and an ejector rod head (3), the ejector rod body (4) comprises an ejector rod boss (25) and an ejector rod body (27), an assembling bulge (26) is arranged at one end, away from the ejector rod boss (25), of the ejector rod body (27), an assembling groove matched with the assembling bulge (26) for use is arranged at one end of the ejector rod head (3), a clamping groove matched with the connecting rod (1) for use is arranged at the other end of the ejector rod head (3), the diameter of the ejector rod boss (25) and the diameter of the ejector rod head (3) are larger than that of the ejector rod body (27), a spring (17) is arranged on the ejector rod body (27), the spring (17) is located between the ejector rod boss (25) and the sleeve bulge (31), and second guide holes (19) are formed in the assembling bulge (26) and the assembling groove, and a second pin shaft is arranged in the second guide hole (19) and is used for connecting the ejector rod body (4) and the ejector rod head (3).
3. The minimally invasive surgical instrument using PEEK connecting rods according to claim 2, characterized in that: the rod holder further comprises a handle (10) and a handle connecting rod, two ends of the handle connecting rod are respectively connected with the sleeve and the handle (10), the handle connecting rod comprises a first connecting rod (14), a second connecting rod (11) and a fixing ball (8), the first connecting rod (14) and the second connecting rod (11) are hollow, a first fixing piece (7) and a first fixing rod (13) are arranged in the first connecting rod (14), a second fixing piece (9) and a second fixing rod (12) are arranged in the second connecting rod (11), a clamping groove (22) is formed in the fixing ball (8), a first clamping ball (21) and a second clamping ball (20) are arranged in the clamping groove (22), one end of the first fixing rod (13) is in threaded connection with the first fixing piece (7), the other end of the first fixing rod penetrates through the clamping groove (22) to be fixedly connected with the first clamping ball (21), and one end of the second fixing rod (12) is in threaded connection with the second fixing piece (9), the other end passes through the clamping groove (22) and is fixedly connected with the second clamping ball (20).
4. The minimally invasive surgical instrument using PEEK connecting rods according to claim 3, wherein: be provided with the connecting block on the sleeve, be provided with connecting groove (23) on the connecting block, be provided with on the handle connecting rod with connecting groove (23) cooperation use connect protruding, connecting groove (23) carry out the circumference welding with the protruding department of connection, the handle connecting rod passes through circumference welded connection with handle (10).
5. The minimally invasive surgical instrument using PEEK connecting rods according to claim 4, wherein: the sleeve body (16) is provided with a third guide hole (6), a stop pin for limiting the screw rod (5) is arranged in the third guide hole (6), and an inner cross hole (15) is formed in the head of one end, far away from the bending position, of the screw rod (5).
6. The minimally invasive surgical instrument using PEEK connecting rods according to claim 5, wherein: the connecting rod head (28) is connected with the connecting rod body (29) through threads, and the connecting rod body (29) is connected with the joint (30) through threads.
7. The minimally invasive surgical instrument using PEEK connecting rods according to claim 6, wherein: the connecting rod head (28) is a TC4 material head, and the joint (30) is a TC4 material joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910035831.5ACN109758223B (en) | 2019-01-15 | 2019-01-15 | Minimally invasive surgical instrument using PEEK connecting rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910035831.5ACN109758223B (en) | 2019-01-15 | 2019-01-15 | Minimally invasive surgical instrument using PEEK connecting rod |
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| Publication Number | Publication Date |
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| CN109758223A CN109758223A (en) | 2019-05-17 |
| CN109758223Btrue CN109758223B (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910035831.5AActiveCN109758223B (en) | 2019-01-15 | 2019-01-15 | Minimally invasive surgical instrument using PEEK connecting rod |
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| DE202012102894U1 (en)* | 2012-07-31 | 2012-08-27 | Chih-Hsuan Wei | Clamping device for attaching a stationary connecting rod for minimally invasive surgery |
| CN202821590U (en)* | 2012-09-26 | 2013-03-27 | 常州市康辉医疗器械有限公司 | Rod holding device and connecting rod |
| CN203609508U (en)* | 2013-11-14 | 2014-05-28 | 山东威高骨科材料有限公司 | Bar placing device |
| CN203873868U (en)* | 2014-03-11 | 2014-10-15 | 无锡市闻泰百得医疗器械有限公司 | Pedicle screw rod-holding device for minimally invasive surgery |
| CN205307074U (en)* | 2015-12-23 | 2016-06-15 | 上海三友医疗器械有限公司 | Nail stick mounting structure in excellent system of backbone nail |
| CN107736925B (en)* | 2017-11-14 | 2020-03-24 | 山东威高骨科材料股份有限公司 | Sleeve, auxiliary device for installing connecting rod and installation method of connecting rod |
- 2019
- 2019-01-15CNCN201910035831.5Apatent/CN109758223B/enactiveActive
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| CN109758223A (en) | 2019-05-17 |
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