CN109381284B - Sacral prosthesis, and installation system and installation method thereof - Google Patents

Sacral prosthesis, and installation system and installation method thereof Download PDF

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Publication number
CN109381284B
CN109381284B CN201811553865.5A CN201811553865A CN109381284B CN 109381284 B CN109381284 B CN 109381284B CN 201811553865 A CN201811553865 A CN 201811553865A CN 109381284 B CN109381284 B CN 109381284B
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China
Prior art keywords
prosthesis
arm
hole
positioning
connecting part
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CN201811553865.5A
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Chinese (zh)
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CN109381284A (en
Inventor
郑明辉
陈建庭
瞿东滨
朱青安
陆国赞
朱纬纬
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Guangzhou Huatai 3d Material Manufacturing Technology Co ltd
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Guangzhou Huatai 3d Material Manufacturing Technology Co ltd
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Priority to CN201811553865.5A priority Critical patent/CN109381284B/en
Publication of CN109381284A publication Critical patent/CN109381284A/en
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Publication of CN109381284B publication Critical patent/CN109381284B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2002/4631—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor the prosthesis being specially adapted for being cemented

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
  • Neurology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Prostheses (AREA)

Abstract

The invention discloses a sacrum prosthesis, a mounting system and a mounting method thereof. The invention realizes sacral reconstruction through the sacral prosthesis.

Description

Sacral prosthesis, and installation system and installation method thereof
Technical Field
The present invention relates to artificial prostheses, and in particular, to a sacral prosthesis and a system and method for installing the same.
Background
The sacrum is an important bone connected with human bones and connected with the upper body vertebra and the ilium of the lower body, and is an important bone for supporting the human body, but because of pathological changes such as tumors, the sacrum is reconstructed due to the fact that a large block of complete excision is adopted for the low-position metastatic tumor of the primary malignant tumor part of the sacrum, so that the supporting strength of the sacrum is insufficient.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a sacral prosthesis, an installation system and an installation method thereof, which realize sacral reconstruction.
The technical scheme is as follows:
the sacrum prosthesis comprises a prosthesis body, wherein the prosthesis body is provided with a first connecting part at the left side and a second connecting part at the right side, a third connecting part is further arranged in the middle of the prosthesis body, protruding clamping teeth are arranged on the connecting surfaces of the first connecting part, the second connecting part and the third connecting part, and at least three fixing holes are further formed in the prosthesis body.
The prosthesis body is provided with a first arm part and a second arm part, the first arm part is intersected with the second arm part, an included angle is formed at the intersection part, one side of the included angle at the inner angle is a first side surface in the overlooking direction, and one side of the outer angle is a second side surface.
The first arm part and the second arm part are respectively provided with a free end, the first connecting part is arranged at the free end of the first arm part, the second connecting part is arranged at the free end of the second arm part, and the third connecting part is arranged at the upper end face of the intersection of the first arm part and the second arm part.
The fixing hole comprises a first connecting hole and a second connecting hole, and the first connecting hole is formed in the first connecting part and obliquely penetrates through the first side face; the second connecting hole is formed in the second connecting portion and penetrates through the first side face in an inclined mode.
Two first threaded holes are formed in the first arm part, one of the first threaded holes is formed in the connecting surface of the first connecting part, and the other of the first threaded holes is formed in the second side surface of the first arm part; two second threaded holes are formed in the second arm portion, one of the second threaded holes is formed in the connecting surface of the second connecting portion, and the other of the second threaded holes is formed in the second side surface of the second arm portion.
The fixing holes comprise two first connecting holes and two second connecting holes, the two first connecting holes are vertically distributed, are formed in the first connecting part, and obliquely penetrate through the first side face or the connecting part of the first side face and the first connecting part; the two second connecting holes are vertically distributed, are formed in the second connecting portion, and obliquely penetrate through the first side face or the connecting position of the first side face and the second connecting portion.
The axes of the first threaded hole and the first connecting hole are different-surface crossed straight lines in space; the axes of the second threaded hole and the second connecting hole are different-surface crossed straight lines in space.
The fixing hole comprises a third connecting hole, the third connecting hole is formed in the third connecting portion, and the third connecting hole penetrates through the first side face obliquely downwards.
The root arrangement track of the latch arranged on the first connecting part and the second connecting part is arc-shaped, and the root of the latch positioned on the upper part is inclined from the first side surface to the second side surface; the root of the latch positioned at the lower part is inclined from the second side surface to the first side surface.
The root of the latch arranged at the third connecting part is inclined to the center of the first side surface.
The prosthesis body comprises a frame body, wherein the frame body is provided with a filling body, the filling body is provided with a densely distributed micropore structure, and part of the filling body is exposed outside the frame.
The frame body is provided with at least three extended end parts which respectively extend to the connecting surface of the first connecting part, the connecting surface of the second connecting part and the connecting surface of the third connecting part.
The diameter of the micropores is 0.2mm to 2mm.
The first connecting portion and the second connecting portion are provided with auxiliary holes at side upper portions of the first side face direction.
The sacral prosthesis installation system comprises an installation support and the sacral prosthesis according to any one of the preceding claims, wherein the installation support comprises a support body, the support body is provided with a first support arm, a second support arm and a third support arm, a prosthesis part is arranged on the first support arm, a positioning part is arranged on the third support arm, a prosthesis part or a positioning part is arranged on the second support arm, the support is connected with the sacral prosthesis, the prosthesis part is connected with the prosthesis body, and the positioning part corresponds to the fixing hole.
The first support arm, the second support arm and the third support arm are respectively provided with the fixing part and the positioning part.
The first support arm and the second support arm are arranged on two sides of the support, and the third support arm is arranged between the first support arm and the second support arm.
The prosthesis comprises a first prosthesis fixing part and a second prosthesis fixing part, the positioning part comprises a first positioning body and a second positioning body, the first support arm and the second support arm are respectively provided with the first prosthesis fixing part and the second positioning body, and the third support arm is provided with the second prosthesis fixing part and the first positioning body.
The cross section of the second positioning body is C-shaped, the axial direction of the second positioning body is communicated, and an expansion groove is formed along the axial direction of the second positioning body and penetrates through the second positioning body.
The second positioning body is movably provided with a guide cylinder.
The first positioning body is provided with a through groove.
The through groove is formed in the surface of the first positioning body and is arranged on one side, opposite to the first prosthesis fixing part, of the first prosthesis fixing part.
The third support arm comprises a first combined arm and a second combined arm, the first positioning body is arranged on the second combined arm, and the second prosthesis fixing part is arranged on the first combined arm.
The first prosthesis fixing parts are arranged in two, the two first prosthesis fixing parts are respectively connected with the tip end parts of the first support arm and the second support arm, the tips of the first support arm and the second support arm are bent, symmetrically face the root parts of the first support arm and the second support arm, and face one side of the second prosthesis fixing part.
The distal end diameters of the first and second arms become smaller.
The first prosthesis fixation portion and the second prosthesis fixation portion are each provided with a mating surface.
The matching surface of the first prosthesis fixing part is provided with a first matching protrusion; the mating surface of the second prosthesis fixation portion is provided with a second mating protrusion.
A method of installing a sacral prosthesis comprising the steps of:
connecting the prosthesis part of the frame body to the first connecting part and the second connecting part of the prosthesis body, and forming a combination body by the frame body and the prosthesis body; placing the combination body at a position to be installed; positioning by using a positioning part, and punching the nail body into the fixing hole; and taking out the frame body.
And taking out the second prosthesis fixing part of the frame body from the third connecting hole, and then punching the nail body into the third connecting hole.
The assembly is placed at the position to be installed, or the first positioning body is used for positioning, after the nail body is punched into the first connecting hole and the second connecting hole, the nail body is punched into the first threaded hole and the second threaded hole through the positioning of the second positioning body.
It should be noted that:
the clamping teeth are used for fixing and clamping, and the root faces the action direction of the clamping;
the left-right positional relationship is a description of the relative positions of the two;
the inner angle refers to the angle with smaller angle, and the outer angle refers to the angle with larger angle;
the out-of-plane crossed straight fingers are not crossed in space, and are crossed straight lines in one plane view angle;
the mating surfaces are in surface contact, and the contact area is large.
The advantages and principles of the invention are described below:
1. the sacrum prosthesis is used as a surgical prosthesis, the first connecting part and the second connecting part are connected to ilium of a human body, and then the third connecting part is connected to the vertebra, so that the function of the sacrum is realized by the prosthesis body, wherein the positioning holes are used for fixing connection, and the prosthesis body can be subjected to pressure effect when in use, so that the connecting surface is provided with convex clamping teeth, and the convex clamping teeth are clamped on the bone of the human body, so that the prosthesis body can bear larger acting force and can be prevented from shifting, and the reconstruction of the sacrum is realized.
2. Because the human bone has physiological radian, the first arm part and the second arm part which are arranged on the prosthesis body are intersected and form an included angle, so that the action direction of actual stress is met.
3. The free ends of the first arm part and the second arm part can be provided with the first connecting part and the second connecting part, so that the requirements on the use function are met, the free ends are not blocked by other structures, the connection is more convenient, and the position of the third connecting part is ensured to be in the middle of the prosthesis body because the third connecting part is arranged on the upper end surface of the intersection of the first arm part and the second arm part, so that the symmetry of human bones is also met.
4. The first connecting hole and the second connecting hole are used for connecting and fixing the first connecting part and the second connecting part, and the first connecting part and the second connecting part obliquely penetrate through the first side surface, and because one side where the first side surface is located does not have the blocking of human bones during installation, one side where the second side surface is located has bones, the requirement that the first connecting part and the second connecting part are connected to bones is met for installation convenience.
5. Two first threaded holes are formed in the first arm part, can penetrate through bones through the nail body and then are connected to the threaded holes, and two first threaded holes are formed in the connecting surface of the first connecting part, one of the first threaded holes is formed in the connecting surface of the first connecting part, and the other first threaded hole is formed in the second side surface of the first arm part, so that the two threaded holes are at a certain distance, two points of the two first threaded holes form a line, and the line is firmer; and two second threaded holes are arranged on the second arm part in the same way.
6. Here first connecting hole and second connecting hole are provided with two respectively, arrange from top to bottom moreover, arrange about with two first screw holes and two second screw holes and fix the prosthetic body, so the firm in connection of prosthetic body.
And 7, the axes of the first threaded hole and the first connecting hole are different-surface crossed straight lines in space, and the different-surface crossed form is spatially presented, so that the connection is firmer, and the connection is arranged in different directions, and the connection stability of the prosthesis body is further enhanced.
8. The third connecting hole is formed in the third connecting portion, and the third connecting portion is connected with the human spine and then fixed, so that the third connecting portion is connected through the third connecting hole, and the third connecting portion is easy to install when penetrating to the first side without blocking of human bones.
9. Because the human vertebra acts on the third connecting part after the prosthesis body is installed, and the third connecting part is not in the same straight line with the first connecting part and the second connecting part which are supported on two sides, the whole prosthesis body has a rotating trend when the third connecting part is stressed to move downwards, and the rotating shaft is the connecting line of the first connecting part and the second connecting part. In order to overcome this rotation tendency, the root arrangement track of the latch provided at the first connection portion and the second connection portion is arc-shaped, and the root of the latch located at the upper portion is inclined from the first side face to the second side face; the root of the latch positioned at the lower part is inclined from the second side to the first side, so that the rotation trend is counteracted or weakened under the action of the latch, and the prosthesis body can have more structures to provide strength support when the human body is stressed.
10. Because the human spine has a tendency to slide toward the second side of the prosthesis body due to physiological curvature and forces after the prosthesis body is installed. The root of the latch provided at the third connecting portion is inclined toward the center of the first side, and this outward tendency is offset or weakened by the action of the latch so that the prosthesis body is not displaced.
11. The prosthesis body comprises a frame body, wherein the frame body is provided with a filling body, the prosthesis is stressed, so the frame body is provided to play a role of total bearing force, and the prosthesis body is required to be adhered to muscle tissues of a human body and the like because the prosthesis body is arranged in the human body, so the frame body is provided with the filling body, the filling body is of a densely distributed micropore structure, and part of the filling body is exposed out of the frame body, so that the muscle tissues of the human body are adhered, the weight of the prosthesis body can be reduced, and the prosthesis body accords with the skeleton form of the human body.
12. Because the frame body plays a role in stressing the prosthesis body, the extending end parts of the frame body are arranged at three stressing parts of the prosthesis body, namely the first connecting part, the second connecting part and the third connecting part, so as to play a role in stressing.
13. The diameter of the micropore of the filling body is 0.2mm to 2mm, which is convenient for adhesion of muscle tissue and the like.
14. The first connecting portion and the second connecting portion are provided with auxiliary holes at the upper side portions of the first side face direction, so that an auxiliary positioning effect is achieved during installation.
15. The first support arm, the second support arm and the third support arm that the support body set up utilize the prosthetic department that sets up on the support arm to connect the prosthetic body, and the locating part realizes the correspondence of fixed orifices, then realizes connecting, so utilizes the support body to carry out supplementary installation, has realized the purpose of accurate location.
16. According to the use difference, can be at first support arm, second support arm and third support arm all be equipped with fixed part and location portion, the relation of mutually supporting is convenient for accurate positioning installation.
17. The first support arm and the second support arm are arranged on two sides of the support, the third support arm is arranged between the first support arm and the second support arm, and the prosthesis body is connected by the prosthesis parts on the first support arm and the second support arm to form a combined body, so that subsequent installation is facilitated.
18. The prosthesis part comprises a first prosthesis fixing part and a second prosthesis fixing part, the positioning part comprises a first positioning body and a second positioning body, the first prosthesis fixing part and the second positioning body are arranged on the first support arm and the second support arm, the first prosthesis fixing part is connected to two sides of the prosthesis body, the second positioning body corresponds to the first threaded hole or the second threaded hole, and the second positioning body positioning nail body is punched into the first threaded hole or the second threaded hole; the third support arm is provided with a second prosthesis fixing part and a first positioning body, the second prosthesis fixing part is connected with the middle position of the prosthesis body, then the first positioning body and the first connecting hole or the second connecting hole correspond to each other, the first positioning body is used for positioning the nail body, the first connecting hole or the second connecting hole is punched, fixing is achieved, then the second prosthesis fixing part is taken out, the third connecting hole is exposed, the nail body is driven into the prosthesis body through the third connecting hole, the prosthesis body is fixed by the aid of the second prosthesis fixing part ingeniously, and the third connecting hole is exposed after the nail body is taken out.
19. The cross section of the second positioning body is C-shaped, and the size of the second positioning body is adjustable by utilizing the expansion groove, so that the second positioning body is suitable for different nail bodies.
20. Through being provided with the guide cylinder on the second location body, pass through the guide cylinder again behind the skeleton with the nail body and be connected with first screw hole or second screw hole, play to the direction more accurate, but also can be through the setting size difference of guide cylinder, realize the installation of the nail body greatly down differently.
21. The through groove arranged on the second positioning body guides the nail body to punch into the first connecting hole or the second connecting hole.
22. The through groove is formed in the surface of the first positioning body and is arranged on one side opposite to the first prosthesis fixing part, and the bone blocking and other tissue blocking are avoided on one side opposite to the first prosthesis fixing part, and the nail body is placed in the side surface due to limited operation space during installation, so that excessive installation space is not needed, and the operation and the installation are convenient.
23. The third support arm is arranged to be of a combined structure, the combined structure comprises a first combined arm and a second combined arm, the split structure is utilized to be assembled in a step-by-step assembly mode, the second combined arm is detached to be taken out after the first connecting hole and the second connecting hole are connected, the first combined arm is detached again, the third connecting hole is exposed, the third connecting hole is connected again, and the split structure can be taken out conveniently.
24. The distal ends of the first and second arms are bent to avoid the bones of the human body and to achieve positioning and fixing functions, and the ends of the first and second arms are bent to the root portions of the first and second arms so that the distal ends are connected to the prosthesis body.
25. The diameters of the distal ends of the first arm and the second arm become smaller, and the distal ends are close to the position of the human skeleton, so that the size is small to be placed conveniently.
26. The fixing part is provided with a matching surface, and the matching surface is matched with the prosthesis body to realize the matching of surface contact, so the fixing part is more stable.
27. The first matching convex is arranged on the matching surface of the first prosthesis fixing part, and the first matching convex and the auxiliary hole are used for fixing and positioning, so that the fixation is more stable; the mating surface of second prosthesis fixed part is provided with the protruding, and protruding and the third connecting hole cooperation of second cooperation, after taking out the second prosthesis fixed part, the third connecting hole exposes, then beats the nail body into the third connecting hole again, ingenious two effects of realizing location and connection fixed through the third connecting hole.
28. Firstly, the frame body and the prosthesis body are connected in vitro, the frame body and the prosthesis are connected through the prosthesis part, then the frame body and the prosthesis form the combined body, the position relationship of the combined body at the moment is fixed with each other, so that the nail body is punched into the fixing hole by the positioning part, the installation position is clear in the installation process, the repositioning is not needed, the installation precision is increased, the installation time is shortened, the operation time of a doctor is saved, and the operation risk of a patient is reduced.
29. Since the second prosthesis fixation section is fixed to the third connection hole, the third connection hole can be directly exposed when the second prosthesis fixation section is removed, so that positioning and fixation are skillfully achieved at one position by this arrangement.
30. The nail body is beaten into and is preliminarily positioned after the first connecting hole and the second connecting hole, then the nail body is beaten into the first threaded hole and the second threaded hole to fix the nail, multidirectional fixing is carried out, the fixing effect of the prosthesis body is good, and compared with the positioning of the first threaded hole and the second threaded hole, the positioning of the first connecting hole and the second connecting hole is easier, so that the first connecting hole and the second connecting hole are fixed firstly, and then the first threaded hole and the second threaded hole are fixed.
Drawings
Fig. 1 is a schematic view of a perspective view of a sacral prosthesis according to an embodiment of the present invention;
fig. 2 is a schematic view of a two-dimensional structure of a sacral prosthesis according to an embodiment of the invention;
fig. 3 is a schematic view of a three-dimensional structure of a sacral prosthesis according to an embodiment of the invention;
FIG. 4 is a schematic view showing a perspective structure of a mounting bracket according to an embodiment of the present invention;
FIG. 5 is a schematic view of a two-dimensional structure of a mounting bracket according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a first arm assembly according to an embodiment of the present invention;
fig. 7 is a schematic view of a first combination arm and sacral prosthesis connection perspective according to an embodiment of the invention;
fig. 8 is a schematic perspective view of an embodiment of a mounting bracket and sacral prosthesis in coupled engagement;
fig. 9 is a schematic plan view of a latch arrangement according to an embodiment of the present invention.
Reference numerals illustrate:
10. a prosthesis body; 11. a first arm portion; 12. a first arm portion; 13. a frame; 14. a filler; 101. a first connection portion; 1011. an auxiliary hole; 102. a second connecting portion; 103. a third connecting portion; 104. latch teeth; 105. a fixing hole; 1051. a first connection hole; 1052. a second connection hole; 1053. a third connection hole; 106. a first side; 107. a second side; 108. a first threaded hole; 109. a second threaded hole; 20. a frame body; 21. a first arm; 22. a second arm; 23. a third arm; 231. a first combined arm; 232. a second combined arm; 24. a prosthesis portion; 241. a first prosthesis fixation section; 242. a second prosthesis fixation section; 243. a mating surface; 244. a first mating projection; 245. a second mating projection; 25. a positioning part; 251. a first positioning body; 252. a second positioning body; 253. a guide cylinder; 254. and (5) through grooves.
Detailed Description
The following describes embodiments of the present invention in detail.
As shown in fig. 8, the sacral installation system includes a sacral prosthesis and an installation stent.
As shown in fig. 1 to 3, the sacral prosthesis is characterized by comprising a prosthesis body 10, wherein the prosthesis body 10 is provided with a first connecting part 101 at the left side and a second connecting part 102 at the right side, a third connecting part 103 is further arranged in the middle of the prosthesis body 10, protruding clamping teeth 104 are arranged on the connecting surfaces of the first connecting part 101, the second connecting part 102 and the third connecting part 103, and at least three fixing holes 105 are further arranged on the prosthesis body 10. Wherein the prosthesis body 10 is provided with a first arm portion 11 and a second arm portion 12, the first arm portion 11 and the second arm portion 12 intersect, an included angle is formed at the intersection, one side of the included angle in a top view is a first side surface 106, and one side of the outer angle is a second side surface 107.
Specifically, the first arm 11 and the second arm 12 each have a free end, the first connecting portion 101 is disposed at the free end of the first arm 11, the second connecting portion 102 is disposed at the free end of the second arm 12, and the third connecting portion 103 is disposed at an upper end surface where the first arm 11 and the second arm 12 intersect.
As shown in fig. 1, the fixing hole 105 includes a first connecting hole 1051 and a second connecting hole 1052, and the first connecting hole 1051 is opened on the first connecting portion 101 and extends obliquely to the first side 106; the second connecting hole 1052 is opened on the second connecting portion 102, and penetrates obliquely to the first side surface 106. Two first threaded holes 108 are formed in the first arm 11, one of the first threaded holes 108 is formed in the connecting surface of the first connecting portion 101, and the other of the first threaded holes 108 is formed in the second side surface 107 of the first arm 11; two second threaded holes 109 are provided on the second arm 12, one of the second threaded holes 109 is provided on the connection surface of the second connection portion 102, and the other is provided on the second side surface 107 of the second arm 12. As shown in fig. 1 and 3, the fixing hole 105 includes a third connecting hole 1053, the third connecting hole 1053 is formed on the third connecting portion 103, and the third connecting hole 1053 penetrates the first side surface 106 obliquely downward. The third connection hole 1053 is connected to the human vertebra.
For the purpose of more stable fixation, the fixing hole 105 includes two first connecting holes 1051 and two second connecting holes 1052, where the two first connecting holes 1051 are arranged up and down, are formed on the first connecting portion 101, and extend obliquely to the first side surface 106 or the connection position between the first side surface 106 and the first connecting portion 101; the two second connection holes 1052 are arranged up and down, are formed on the second connection portion 102, and extend obliquely through to the first side surface 106 or the connection portion between the first side surface 106 and the second connection portion 102. Such that the axes of the first threaded hole 108 and the first connecting hole 1051 are spatially off-plane intersecting straight lines; the axes of the second screw hole 109 and the second connection hole 1052 are spatially different-surface intersecting straight lines.
As shown in fig. 9, the root arrangement track of the latch 104 provided in the first connection portion 101 and the second connection portion 102 is arc-shaped, and the root of the latch 104 located at the upper portion is inclined from the first side surface 106 to the second side surface 107; the root of the latch 104 located at the lower portion is inclined from the second side 107 to the first side 106. The arrangement is preferable because the body 10 is mounted so that the human spine acts on the third connecting portion 103 and the third connecting portion 103 is not in the same straight line with the first connecting portion 101 and the second connecting portion 102 supported on both sides, so that the body 10 as a whole has a rotation tendency when the third connecting portion 103 is forced to move downward and the rotation axis is the line connecting the first connecting portion 101 and the second connecting portion 102. So that the latch 104 is held in force against this rotational tendency.
As shown in fig. 3, the root of the latch 104 provided at the third connecting portion 103 is inclined toward the center of the first side 106. Similarly, the latch 104 is held by a force.
As shown in fig. 3, the prosthesis body 10 includes a frame 13, the frame 13 is provided with a filler 14, the filler 14 has a densely distributed micropore structure, and a part of the filler 14 is exposed outside the frame, the frame 13 is provided with at least three extending ends, which respectively extend to the connection surface of the first connection portion 101, the connection surface of the second connection portion 102, and the connection surface of the third connection portion 103, and the diameter of the micropore is 0.2mm to 2mm.
Further, the first connection portion 101 and the second connection portion 102 are each provided with an auxiliary hole 1011 at an upper side portion in the direction of the first side surface 106 for subsequent mounting and positioning.
As shown in fig. 4 to 8, the sacral prosthesis installation system comprises a mounting bracket and a sacral prosthesis, wherein the mounting bracket comprises a bracket body 20, the bracket body 20 is provided with a first support arm 21, a second support arm 22 and a third support arm 23, a prosthesis portion 24 is arranged on the first support arm 21, a positioning portion 25 is arranged on the third support arm 23, a prosthesis portion 24 or a positioning portion 25 is arranged on the second support arm 22, the bracket is connected with the sacral prosthesis, the prosthesis portion 24 is connected with the prosthesis body 10, and the positioning portion 25 corresponds to the fixing hole 105.
The first arm 21, the second arm 22 and the third arm 23 are provided with the fixing portion and the positioning portion 25. The first arm 21 and the second arm 22 are disposed on both sides of the bracket, and the third arm 23 is disposed between the first arm 21 and the second arm 22.
As shown in fig. 4 and 5, the prosthesis portion 24 includes a first prosthesis fixing portion 241 and a second prosthesis fixing portion 242, the positioning portion 25 includes a first positioning body 251 and a second positioning body 252, the first support arm 21 and the second support arm 22 are respectively provided with the first prosthesis fixing portion 241 and the second positioning body 252, and the third support arm 23 is provided with the second prosthesis fixing portion 242 and the first positioning body 251. The cross section of the second positioning body 252 is a C shape, the axial direction of the second positioning body 252 is through, an expansion groove is formed along the axial direction of the second positioning body 252, and penetrates through the second positioning body 252, and a guide cylinder 253 is movably mounted on the second positioning body 252. The first positioning body 251 is provided with a through groove 254, and the through groove 254 is formed on the surface of the first positioning body 251 and on the side facing away from the first prosthesis fixing portion 241.
As shown in fig. 4, the third arm 23 includes a first combining arm 231 and a second combining arm 232, the first positioning body 251 is disposed on the second combining arm 232, and the second prosthesis fixing part 242 is disposed on the first combining arm 231. Wherein the first combination arm 231 is provided with a connection position, and the second combination arm 232 is mounted on the first combination arm through the connection position.
As shown in fig. 4 and 5, two fixing portions 241 are respectively connected to distal ends of the first arm 21 and the second arm 22, the distal ends of the first arm 21 and the second arm 22 are curved, symmetrically toward the root portions of the first arm 21 and the second arm 22, and toward the second prosthesis fixing portion 242, and the distal end diameters of the first arm 21 and the second arm 22 become smaller.
As shown in fig. 7, the first prosthesis fixation part 241 and the second prosthesis fixation part 242 are each provided with a mating surface 243, and the mating surface 243 of the first prosthesis fixation part 241 is provided with a first mating protrusion 244; the mating surface 243 of the second prosthesis fixation segment 242 is provided with a second mating protrusion 245.
The sacral prosthesis installation method of the sacral installation system according to the embodiment includes the following steps:
connecting the prosthesis portion 24 of the frame body 20 to the first connecting portion 101 and the second connecting portion 102 of the prosthesis body 10, the frame body 20 and the prosthesis body 10 forming a combination; placing the combination body at a position to be installed; positioning by using the positioning part 25, and punching the nail body into the fixing hole 105; the frame 20 is taken out.
Further, the second prosthesis fixing part 242 of the frame body 20 is taken out from the third coupling hole 1053, and the nail body is driven into the third coupling hole 1053.
In addition, after the above-mentioned combination is placed at a position to be mounted or is positioned using the first positioning body 251, the nail body is driven into the first and second connection holes 1051 and 1052, and then is positioned by the second positioning body 252, the nail body is driven into the first and second screw holes 108 and 109. A step of
Fig. 3 shows the frame 13 and the filling body 14, and does not mean that the frame 13 and the filling body 14 can be seen only in this view, and in fig. 3, the filling body 14 is a schematic part of a grid, and the frame 13 is a grid internal structure, and the first connection part 101, the second connection part 102, and the third connection part 103.
The advantages of this embodiment are:
1. the sacrum prosthesis is used as a surgical prosthesis, the first connecting part 101 and the second connecting part 102 are connected to ilium of a human body, then the third connecting part 103 is connected to the spine, so that the prosthesis body 10 achieves the function of the sacrum, wherein the positioning holes are used for fixing connection, and the protruding clamping teeth 104 are arranged on the connecting surface due to the pressure effect when the prosthesis body 10 is used, and the clamping teeth 104 are clamped on the bone of the human body, so that the prosthesis body 10 can bear larger acting force and can be prevented from shifting, and the reconstruction of the sacrum is achieved.
2. Because the human bone has physiological radian, the first arm part 11 and the second arm part 12 arranged on the prosthesis body 10 are intersected and form an included angle, so that the action direction of the actual stress is met.
3. The free ends of the first arm part 11 and the second arm part 12 can be provided with the first connecting part 101 and the second connecting part 102, so that the requirements on the use function are met, the free ends are not blocked by other structures, the connection is more convenient, and the third connecting part 103 is arranged on the upper end face of the intersection of the first arm part 11 and the second arm part 12, so that the position of the third connecting part 103 is ensured to be in the middle part of the prosthesis body 10, and the symmetry of human bones is also met.
4. The first connecting hole 1051 and the second connecting hole 1052 are used for connecting and fixing the first connecting portion 101 and the second connecting portion 102, and obliquely penetrate to the first side surface 106, and because the side where the first side surface 106 is located is not blocked by human bones during installation, the side where the second side surface 107 is located is provided with bones, the requirement of connecting on bones is met for installation convenience.
5. Two first threaded holes 108 are formed in the first arm 11, can penetrate through bones through the nail body and then are connected to the threaded holes, and two first threaded holes 108 are formed in the connecting surface of the first connecting portion 101, and one of the two first threaded holes is formed in the second side surface 107 of the first arm 11, so that a certain distance is reserved between the two threaded holes, and two points of the two first threaded holes 108 are in line, so that the screw is more stable; similarly, two second screw holes 109 are provided in the second arm portion 12.
6. Here, the first and second connection holes 1051 and 1052 are provided two by two, and are arranged up and down, and the prosthesis body 10 is fixed with the left and right arrangement of the two first and second screw holes 108 and 109, so that the connection of the prosthesis body 10 is firm.
And the axes of the first threaded hole 108 and the first connecting hole 1051 are different-surface crossed straight lines in space, and the different-surface crossed form is spatially presented, so that the connection is firmer, and the connection is carried out in different directions, and the connection stability of the prosthesis body 10 is further enhanced.
8. The third connecting hole 1053 is formed in the third connecting portion 103, and the third connecting portion 103 is connected to the human spine and then fixed, so that the third connecting portion is connected through the third connecting hole 1053, and the third connecting portion is easily installed without blocking the human bone when penetrating to the first side surface 106.
9. Since the human spine acts on the third connecting portion 103 after the prosthesis body 10 is mounted, and the third connecting portion 103 is not in the same straight line with the first connecting portion 101 and the second connecting portion 102 supported on both sides, the prosthesis body 10 has a rotation tendency as a whole when the third connecting portion 103 is forced to move downward, and the rotating axis is the line connecting the first connecting portion 101 and the second connecting portion 102. In order to overcome this rotation tendency, the root arrangement track of the latch 104 provided at the first connection portion 101 and the second connection portion 102 is arc-shaped, and the root of the latch 104 located at the upper portion is inclined from the first side surface 106 to the second side surface 107; the root of the latch 104 located at the lower portion is inclined from the second side 107 to the first side 106, so that the rotation tendency is counteracted or weakened by the latch 104, and thus the prosthesis body 10 can have more structure to provide strength support when the human body is stressed.
10. Because the human spine has a tendency to slide toward the second side 107 of the prosthesis body 10 due to physiological curvature and forces when the prosthesis body 10 is installed. The root of the latch 104 provided at the third connecting portion 103 is inclined toward the center of the first side 106, and this outward tendency is offset or weakened by the action of the latch 104 so that the prosthesis body 10 is not displaced.
11. The prosthesis body 10 comprises a frame 13, the frame 13 is provided with a filling body 14, the prosthesis needs to be stressed, the frame 13 is provided to play a role of total bearing, the prosthesis body 10 needs to be adhered to human muscle tissues and the like because the prosthesis body is arranged in a human body, the filling body 14 is arranged in the frame 13, the filling body 14 is of a densely distributed micropore structure, and part of the filling body 14 is exposed out of the frame 13, so that the tissues such as the human muscle are adhered, the weight of the prosthesis body 10 can be reduced, and the prosthesis body conforms to the skeleton form of the human body.
12. Since the frame 13 acts as a force to the prosthesis body 10, the three force-receiving portions of the prosthesis body 10, i.e., the first connecting portion 101, the second connecting portion 102, and the third connecting portion 103, have the extending end portions of the frame 13, which acts as a force.
13. The micropores of the filling body 14 have diameters of 0.2mm to 2mm, so that adhesion of muscle tissue and the like is facilitated.
14. The first connection portion 101 and the second connection portion 102 are each provided with an auxiliary hole 1011 at an upper side portion in the direction of the first side surface 106, so that an auxiliary positioning effect is achieved at the time of installation.
15. The first support arm 21, the second support arm 22 and the third support arm 23 arranged on the support body 20 are connected with the prosthesis body 10 by using the prosthesis parts 24 arranged on the support arms, and the positioning parts 25 realize the corresponding relation of the fixing holes 105 and then realize the connection, so that the support body 20 is used for auxiliary installation, and the purpose of accurate positioning is realized.
16. According to different usage, the fixing portion and the positioning portion 25 may be disposed on the first support arm 21, the second support arm 22 and the third support arm 23, which are in a mutually matched relationship, so as to facilitate accurate positioning and installation.
17. The first support arm 21 and the second support arm 22 are arranged on two sides of the support, the third support arm 23 is arranged between the first support arm 21 and the second support arm 22, and the prosthesis body 10 is connected by the prosthesis parts 24 on the first support arm 21 and the second support arm 22 to form a combined body, so that the subsequent installation is convenient.
18. The prosthesis part 24 comprises a first prosthesis fixing part 241 and a second prosthesis fixing part 242, the positioning part 25 comprises a first positioning body 251 and a second positioning body 252, the first prosthesis fixing part 241 and the second positioning body 252 are arranged on the first support arm 21 and the second support arm 22, the first prosthesis fixing part 241 is connected to two sides of the prosthesis body 10, the second positioning body 252 corresponds to the first threaded hole 108 or the second threaded hole 109, and the second positioning body 252 positions the nail body to be driven into the first threaded hole 108 or the second threaded hole 109; the third support arm 23 is provided with a second prosthesis fixing part 242 and a first positioning body 251, the second prosthesis fixing part 242 is connected with the middle position of the prosthesis body 10, then the first positioning body 251 and the first connecting hole 1051 or the second connecting hole 1052 correspond to each other, the first positioning body 251 performs nail body positioning, the first connecting hole 1051 or the second connecting hole 1052 is punched to realize fixation, then the second prosthesis fixing part 242 is taken out, the third connecting hole 1053 is exposed, the nail body is driven into the prosthesis body 10 through the third connecting hole 1053, the prosthesis body 10 is fixed by skillfully utilizing the second prosthesis fixing part 242, and the third connecting hole 1053 is exposed after the first positioning body 251 is taken out.
19. The cross section of the second positioning body 252 is C-shaped, and the size of the second positioning body 252 is adjustable by utilizing the expansion groove, so that the second positioning body 252 is suitable for different nail bodies.
20. Through being provided with guide cylinder 253 on second location body 252, pass through guide cylinder 253 again and be connected with first screw hole 108 or second screw hole 109 after the skeleton, play to the direction more accurate, but also can realize the installation of the nail body and be different down through the setting size difference of guide cylinder 253.
21. The through-hole 254 provided in the second positioning body 252 guides the nail body to be driven into the first connection hole 1051 or the second connection hole 1052.
22. The through groove 254 is formed on the surface of the first positioning body 251 and on the side facing away from the first prosthesis fixing portion 241, and the side facing away from the first prosthesis fixing portion 241 is free from bone blocking and other tissue blocking, and the nail body is placed in the side surface due to limited operation space during installation, so that excessive installation space is not required, and the operation and installation are convenient.
23. The third support arm 23 is provided with a combined structure, specifically comprising a first combined arm 231 and a second combined arm 232, the split structure is utilized to assemble in a step-by-step assembly mode, the second combined arm 232 is disassembled to be taken out after the first connecting hole 1051 and the second connecting hole 1052 are connected, the first combined arm 231 is disassembled again, the third connecting hole 1053 is exposed, the third connecting hole 1053 is connected again, and the split structure can be taken out conveniently.
24. The distal ends of the first arm 21 and the second arm 22 are bent so as to avoid the bones of the human body and perform positioning and fixing functions, and the ends of the first arm 21 and the second arm 22 are bent toward the root of the first arm 22 so that the distal ends are connected to the prosthesis body 10.
25. The distal ends of the first arm 21 and the second arm 22 are tapered in diameter, and the distal ends are small in size to facilitate placement as they are adjacent to the location of the human bone.
26. The fitting surface 243 is provided on the fixing portion, and the fitting surface 243 is fitted to the prosthesis body 10 to achieve surface contact fitting, so that the fitting is more stable.
27. The first matching convex 244 is arranged on the matching surface 243 of the first prosthesis fixing part 241, and the first matching convex 244 is used for fixing and positioning with the auxiliary hole 1011, so that the fixation is more stable; the second fitting protrusion 245 is disposed on the fitting surface 243 of the second prosthesis fixing portion 242, the second fitting protrusion 245 is fitted with the third connecting hole 1053, when the second prosthesis fixing portion 242 is removed, the third connecting hole 1053 is exposed, and then the nail body is punched into the third connecting hole 1053, thereby realizing two functions of positioning and connecting and fixing through the third connecting hole 1053.
28. Firstly, the frame body 20 and the prosthesis body 10 are connected in vitro, then the frame body 20 and the prosthesis form a combined body through the prosthesis part 24, and the position relationship and mutual fixation of the combined body at the moment are realized, so that the nail body is punched into the fixing hole 105 by the positioning part 25, the installation position is clear in the installation process, the repositioning is not needed, the installation precision is increased, the installation time is shortened, the operation time of doctors is saved, and the operation risk of patients is reduced.
29. Since the second prosthesis fixing part 242 is fixed on the third connection hole 1053, the third connection hole 1053 can be directly exposed when the second prosthesis fixing part 242 is removed, so that positioning and fixing are skillfully achieved at one position by this arrangement.
30. The nail body is punched into the first connecting hole 1051 and the second connecting hole 1052, then the preliminary positioning is carried out on the prosthesis body 10, the nail body is punched into the first threaded hole 108 and the second threaded hole 109 to fix nails, the fixing effect of the prosthesis body 10 is good, and compared with the positioning of the first threaded hole 108 and the second threaded hole 109, the positioning of the first connecting hole 1051 and the second connecting hole 1052 is easier, so the first connecting hole 1051 and the second connecting hole 1052 are fixed firstly, and then the first threaded hole 108 and the second threaded hole 109 are fixed.
The foregoing is merely exemplary embodiments of the present invention, and is not intended to limit the scope of the present invention; any substitutions and modifications made without departing from the spirit of the invention are within the scope of the invention.

Claims (6)

1. The sacrum prosthesis is characterized by comprising a prosthesis body, wherein the prosthesis body is provided with a first connecting part at the left side and a second connecting part at the right side, a third connecting part is further arranged in the middle of the prosthesis body, protruding clamping teeth are arranged on connecting surfaces of the first connecting part, the second connecting part and the third connecting part, and the prosthesis body is further provided with at least three fixing holes;
the prosthesis body is provided with a first arm part and a second arm part, the first connecting part is arranged at the free end of the first arm part, the second connecting part is arranged at the free end of the second arm part, the first arm part and the second arm part are intersected, an included angle is formed at the intersection, one side of the included angle at the inner angle is a first side surface in the overlooking direction, and one side of the outer angle is a second side surface; the third connecting part is arranged on the upper end surface of the intersection of the first arm part and the second arm part;
the root arrangement track of the latch arranged on the first connecting part and the second connecting part is arc-shaped, and the root of the latch positioned on the upper parts of the first connecting part and the second connecting part inclines from the first side surface to the second side surface; the root parts of the clamping teeth positioned at the lower parts of the first connecting part and the second connecting part incline from the second side surface to the first side surface; the root of the latch of the third connecting part is inclined to the center of the first side surface.
2. The sacral prosthesis of claim 1, wherein said fixation hole comprises a first connection hole and a second connection hole, said first connection hole being open at said first connection portion and extending diagonally through to said first side; the second connecting hole is formed in the second connecting portion and penetrates through the first side face in an inclined mode.
3. The sacral prosthesis of claim 1 wherein said first arm has two first threaded bores disposed therein, one of said first threaded bores being defined in a connecting surface of said first connecting portion and the other of said first threaded bores being defined in said second side surface of said first arm; two second threaded holes are formed in the second arm portion, one of the second threaded holes is formed in the connecting surface of the second connecting portion, and the other of the second threaded holes is formed in the second side surface of the second arm portion.
4. The sacral prosthesis of claim 1, wherein said fixation hole comprises a third connecting hole, said third connecting hole being defined in said third connecting portion, said third connecting hole extending obliquely downward through said first lateral surface.
5. The sacral prosthesis of claim 4 wherein said prosthesis body comprises a frame, said frame having a filler, said filler having a densely packed microporous structure and a portion of the filler being exposed outside the frame.
6. The sacral prosthesis installation system comprises an installation support and the sacral prosthesis according to any one of the preceding claims, wherein the installation support comprises a support body, the support body is provided with a first support arm, a second support arm and a third support arm, a prosthesis part is arranged on the first support arm, a positioning part is arranged on the third support arm, a prosthesis part or a positioning part is arranged on the second support arm, the support is connected with the sacral prosthesis, the prosthesis part is connected with the prosthesis body, and the positioning part corresponds to the fixing hole.
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CN110353861B (en) * 2019-06-25 2021-08-27 广州诺曼数字化医疗科技有限公司 Personalized preparation method of human sacrum prosthesis
CN116747053B (en) * 2023-08-11 2023-12-19 北京爱康宜诚医疗器材有限公司 sacral prosthesis

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