CN113303953A - Patella trimming and fixing tool in knee joint replacement - Google Patents

Patella trimming and fixing tool in knee joint replacement Download PDF

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Publication number
CN113303953A
CN113303953A CN202110655299.4A CN202110655299A CN113303953A CN 113303953 A CN113303953 A CN 113303953A CN 202110655299 A CN202110655299 A CN 202110655299A CN 113303953 A CN113303953 A CN 113303953A
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China
Prior art keywords
handle
tray
ligament
patella
clamping part
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Pending
Application number
CN202110655299.4A
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Chinese (zh)
Inventor
曾小燕
蔡有军
张利祥
代宇驰
冉天飞
柯松
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Second Affiliated Hospital Army Medical University
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Second Affiliated Hospital Army Medical University
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Publication date
Application filed by Second Affiliated Hospital Army Medical University filed Critical Second Affiliated Hospital Army Medical University
Priority to CN202110655299.4A priority Critical patent/CN113303953A/en
Publication of CN113303953A publication Critical patent/CN113303953A/en
Pending legal-status Critical Current

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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
    • A61F2/46—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
    • A61F2/461—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 knees
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/2812—Surgical forceps with a single pivotal connection
    • A61B17/282—Jaws
    • 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
    • A61F2002/4622—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 having the shape of a forceps or a clamp

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Transplantation (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Vascular Medicine (AREA)
  • Cardiology (AREA)
  • Ophthalmology & Optometry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgical Instruments (AREA)

Abstract

A patella trimming and fixing tool in knee joint replacement surgery is characterized in that: the fixing device comprises a tray for supporting a patella and two ligament clamping parts, wherein the tray of the fixing device is provided with a concave cavity, the concave cavity is large at the top and small at the bottom, a supporting plate for supporting the ligament extends from the left side and the right side of the periphery of the tray respectively, a first handle also extends from the middle of the periphery of the tray, the two ligament clamping parts are respectively positioned at the left side and the right side of the tray and correspond to the left side and the right side of the tray and extend in a bending way around the periphery of the tray, the left ligament clamping part and the right ligament clamping part are respectively provided with a second handle, and the two second handles are respectively positioned at the two sides of the first handle and hinged with the first handle, so that the ligament clamping parts can be matched with the supporting plate to clamp the ligament; the rear ends of the first handle and the second handle are provided with finger rings.

Description

Patella trimming and fixing tool in knee joint replacement
Technical Field
The invention relates to a medical appliance, in particular to a patella trimming and fixing tool in knee joint replacement.
Background
The patella, commonly known as the patella, is a seed bone formed in the tendon of quadriceps femoris, is also the largest seed bone of the whole body, is in the shape of flat millet, is positioned under the skin and is easy to touch, and the bone has the width of the bottom, the tip of the bone downwards, the front of the bone is rough, the back of the bone is smooth, and the bone can move up, down, left and right. The patella and the femur are in the joint and participate in the formation of the knee joint. The knee joint is an important load bearing joint of the lower limb, the knee joint is diseased, and knee joint replacement is required seriously, so that the knee joint replacement can relieve knee joint pain, improve the function of the knee joint, correct the knee joint deformity and obtain long-term stability. In knee joint replacement operation in the past, when carrying out the patella and repairing, need detain the ligament of patella both sides in opposite directions with two cloth towel pincers, just can carry out the patella and repair, this kind of method of fixed patella causes patellar ligament local tear easily to fixed patella very unstable like this is unfavorable for going on of operation, leads to the time extension of repairing, repairs the result of failure even.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a patella trimming and fixing tool in knee joint replacement, which can stably fix the patella, and the technical scheme of the invention is as follows:
a fixing tool for repairing patella in knee joint replacement comprises a tray for supporting the patella and a fixer with two ligament clamping parts, wherein the tray of the fixer is provided with a concave cavity, the concave cavity is large at the top and small at the bottom, a supporting plate for supporting the ligament extends from the left side and the right side of the periphery of the tray respectively, a first handle also extends from the middle of the periphery of the tray, the two ligament clamping parts are respectively positioned at the left side and the right side of the tray and correspond to each other and extend in a bending way around the periphery of the tray, the left ligament clamping part and the right ligament clamping part are respectively provided with a second handle, and the two second handles are respectively positioned at the two sides of the first handle and hinged with the first handle, so that the ligament clamping parts can be matched with the supporting plate to clamp the ligament; the rear ends of the first handle and the second handle are provided with finger rings.
The tray is oval, and the cavity of tray link up from top to bottom, and the last port of cavity, port are oval down, and the last port of cavity is greater than port down, and the inner wall of cavity is used for the bearing kneecap.
When the first handle and the two second handles are clamped tightly, the front end of the ligament clamping part is positioned between the supporting plate and the front end of the tray.
The upper end face of the supporting plate is perpendicular to the central axis of the tray and lower than the upper port of the tray.
The front end surface of the ligament clamping part is perpendicular to the axis of the second handle.
The ligament clamping part is the cambered surface with the face that the layer board is relative, and this cambered surface is towards the layer board bending, and the central angle that this cambered surface corresponds is 30 ~ 40.
The left side and the right side of the first handle are respectively provided with a retaining arm, the side surfaces of the two second handles adjacent to the first handle are respectively provided with a retaining arm matched with the retaining arm of the first handle, and the retaining arms are respectively provided with a ratchet.
The cross-section of ligament clamping part is rectangle, and the width of the clamping face of ligament clamping part is greater than the thickness of ligament clamping part.
The width of the second handle increases at the finger loop.
Adopt above-mentioned technical scheme: the fixing device comprises a tray for supporting a patella and two ligament clamping parts, wherein the tray of the fixing device is provided with a concave cavity, the concave cavity is large at the top and small at the bottom, a supporting plate for supporting the ligament extends from the left side and the right side of the periphery of the tray respectively, a first handle also extends from the middle of the periphery of the tray, the two ligament clamping parts are respectively positioned at the left side and the right side of the tray and correspond to the left side and the right side of the tray and extend in a bending way around the periphery of the tray, the left ligament clamping part and the right ligament clamping part are respectively provided with a second handle, and the two second handles are respectively positioned at the two sides of the first handle and hinged with the first handle, so that the ligament clamping parts can be matched with the supporting plate to clamp the ligament; the rear ends of the first handle and the second handle are provided with finger rings. When carrying out knee joint replacement art, the kneecap is placed in the cavity of tray, has had the bearing of tray, and the kneecap is fixed more stably, and the ligament is placed on the layer board, and is pressed from both sides tightly through two ligament clamping parts, can not take place the local tearing condition of kneecap ligament. The knee joint replacement device is simple and easy to use, simple in structure, easy to manufacture and convenient to implement, popularize and apply, is beneficial to operation when used in knee joint replacement, facilitates the patella trimming operation of medical workers, shortens the trimming time, and greatly reduces the probability of operation errors and even operation failure.
When the first handle and the two second handles are clamped tightly, the front end of the ligament clamping part is positioned between the supporting plate and the front end of the tray, so that the ligament clamping part is prevented from being too long and touching other human tissues.
Ligament clamping part is the cambered surface with the relative face of layer board, and this cambered surface is towards the layer board bending, more makes things convenient for the centre gripping ligament, and the central angle that this cambered surface corresponds is 30 ~ 40.
The left side and the right side of the first handle are respectively provided with a retaining arm, the side surfaces of the two second handles adjacent to the first handle are respectively provided with a retaining arm matched with the retaining arm of the first handle, the retaining arms are respectively provided with a ratchet, and the first handle and the second handle can be fixed through the matching of the retaining arms in pairs.
The cross-section of ligament clamping part is the rectangle, and the width of the clamping face of ligament clamping part is greater than the thickness of ligament clamping part, prevents that the shearing force of ligament clamping part is too big and leads to the ligament of pinches off.
The width of second handle increases in ring department, and convenient handheld improves the comfort level, and the hand is painful when avoiding using.
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view taken along line A-A of FIG. 1;
fig. 3 is a schematic structural view of the first handle and the second handle when clamped together.
Detailed Description
The invention relates to an embodiment of a patella trimming and fixing tool in knee joint replacement surgery, which comprises the following components in parts by weight:
referring to fig. 1-3, a fixing tool is maintained to patella in knee joint replacement art, including a tray 1 that is used for supporting the patella and the fixer of two ligament clamping part 2, the tray 1 of fixer is equipped with a cavity 3, big-end-up of cavity 3, tray 1 is oval, link up from top to bottom in cavity 3 of tray 1, and the last port of cavity 3, lower port are oval, and the last port of cavity 3 is greater than lower port, and the 3 inner walls of cavity are the curved surface of indent, and the inner wall of cavity 3 is used for the bearing patella, and the lower port of cavity 3 is used for stepping down for the protruding position of patella. The left side and the right side of the periphery of the tray 1 are respectively extended with a supporting plate 4 for supporting ligaments, and the upper end face of each supporting plate 4 is perpendicular to the central axis of the tray 1 and is lower than the upper port of the tray 1. A first handle 5 extends out of the middle of the periphery of the tray 1, the two ligament clamping parts 2 are respectively positioned at the left side and the right side of the tray 1 and correspond to each other, and are bent and extended around the periphery of the tray 1, the left ligament clamping part 2 and the right ligament clamping part 2 are respectively provided with a second handle 6, the two second handles 6 are respectively positioned at the two sides of the first handle 5 and are hinged with the first handle 5, so that the ligament clamping parts 2 can be matched with the supporting plate 4 to clamp ligaments, and the two second handles 6 are not interfered with each other, so that the force for fixing the ligaments by the two second handles 6 can be respectively controlled, and the force applied by the ligament clamping parts for fixing the ligaments is required to be adjusted along with different clamping depths of the second handles 6 at the same side because the ligaments at the upper side and the lower side are not uniform in thickness; the rear ends of the first handle 5 and the second handle 6 are both provided with finger rings 7, and the holes of the finger rings of the first handle 5 and the second handle 6 are not overlapped. The width of the second handle 6 is increased at the finger ring, so that the finger ring is convenient to hold, the comfort level is improved, and the hand pain in use is avoided. The left side and the right side of the first handle 5 are respectively provided with a retaining arm, the side surfaces of the two second handles 6 adjacent to the first handle 5 are respectively provided with a retaining arm matched with the retaining arm of the first handle 5, the retaining arms are respectively provided with a ratchet, and the first handle 5 and the second handle 6 can be fixed through the matching of the retaining arms. When the first handle 5 and the two second handles 6 are clamped tightly, the front end of the ligament clamping part 2 is positioned between the supporting plate 4 and the front end of the tray 1, so that the ligament clamping part 2 is prevented from being too long and touching other human tissues. The front end face of the ligament clamping portion 2 is perpendicular to the axis of the second handle 6 and clamps to the ligament as much as possible. Ligament clamping part 2 is the cambered surface with the face that layer board 4 is relative, and this cambered surface is towards layer board 4 bending, more makes things convenient for the centre gripping ligament, and the central angle that this cambered surface corresponds is 30 ~ 40, and in this embodiment, the central angle that this cambered surface corresponds is 35. The cross-section of ligament clamping part 2 is the rectangle, and the width of the clamping face of ligament clamping part 2 is greater than the thickness of ligament clamping part 2, prevents that the shearing force of ligament clamping part 2 is too big and leads to the pinch-off ligament. In this embodiment, the width of the clamping face of ligament clamping part 2 is 6.5mm, and the thickness of ligament clamping part 2 is 4mm, and the height of tray is 15mm, and the tray wall thickness is 5mm, and the major axis of tray outer wall upper end is 60mm, and the minor axis of tray outer wall upper end is 50mm, and the 4 thick 5mm of layer board, first handle 5 length are 120 mm. The inner surface of the tray and the upper end surface of the supporting plate are both polished to prevent clamping injury, and the clamping surface of the ligament clamping part is roughened to stably fix the ligament during pressing so as to prevent the ligament from slipping. When carrying out knee joint replacement art, the kneecap is placed in the cavity 3 of tray 1, has had the bearing of tray 1, and the kneecap is fixed more stably, and the ligament is placed on layer board 4, presss from both sides tightly through two ligament clamping part 2, can not take place the local tearing condition of kneecap ligament. The knee joint replacement device is simple and easy to use, simple in structure, easy to manufacture and convenient to implement, popularize and apply, is beneficial to operation when used in knee joint replacement, facilitates the patella trimming operation of medical workers, shortens the trimming time, and greatly reduces the probability of operation errors and even operation failure.
When the knee joint replacement is carried out, the knee joint of a patient is straightened to be in a 180-degree state, then the patella is turned outwards, then the invention is held by a hand, the patella is supported by the tray 1, the front surface of the patella is downwards placed in the tray 1, the joint surface is upwards, the lower port of the tray 1 is used for yielding the front surface of the patella, the patella is supported by the inner wall of the tray 1, meanwhile, ligaments are placed on the supporting plate 4, the surfaces of the ligaments are clamped by the two ligament clamping parts 2, the two ligament clamping parts 2 can respectively control the clamping force, then the positions of the first handle 5 and the second handle 6 are fixed by the retaining arm 8, and the patella can be trimmed.

Claims (9)

1. A patella trimming and fixing tool in knee joint replacement surgery is characterized in that: the fixing device comprises a tray (1) for supporting a patella and two ligament clamping parts (2), wherein the tray (1) of the fixing device is provided with a cavity (3), the cavity (3) is large in the upper part and small in the lower part, a supporting plate (4) for supporting a ligament extends from each of the left side and the right side of the periphery of the tray (1), a first handle (5) extends from the middle of the periphery of the tray (1), the two ligament clamping parts (2) are respectively positioned at the left side and the right side of the tray (1) and correspond to each other and extend in a bending way around the periphery of the tray (1), a second handle (6) is respectively arranged on each of the left ligament clamping part and the right ligament clamping part (2), and the two second handles (6) are respectively positioned at the two sides of the first handle (5) and hinged to the first handle (5), so that the ligament clamping parts (2) can be matched with the supporting plate (4) to clamp the ligament; the rear ends of the first handle (5) and the second handle (6) are provided with finger rings (7).
2. The patella resurfacing fixation tool in knee arthroplasty according to claim 1, wherein: tray (1) is oval, link up from top to bottom in concave cavity (3) of tray (1), and last port, the lower port of concave cavity (3) are oval, and the last port of concave cavity (3) is greater than lower port, and the inner wall of concave cavity (3) is used for the bearing patella.
3. The patella resurfacing fixation tool in knee arthroplasty according to claim 1, wherein: when the first handle (5) and the two second handles (6) are clamped, the front end of the ligament clamping part (2) is positioned between the supporting plate (4) and the front end of the tray (1).
4. The patella resurfacing fixation tool in knee arthroplasty according to claim 1, wherein: the upper end face of the supporting plate (4) is perpendicular to the central axis of the tray (1) and is lower than the upper end opening of the tray (1).
5. The patella resurfacing fixation tool in knee arthroplasty according to claim 1, wherein: the front end surface of the ligament clamping part (2) is vertical to the axis of the second handle (6).
6. The patella resurfacing fixation tool in knee arthroplasty according to claim 1, wherein: ligament clamping part (2) is the cambered surface with the face that layer board (4) are relative, and this cambered surface is crooked towards layer board (4), and the central angle that this cambered surface corresponds is 30 ~ 40.
7. The patella resurfacing fixation tool in knee arthroplasty according to claim 1, wherein: the left side and the right side of the first handle (5) are respectively provided with a retaining arm, the side surfaces of the two second handles (6) adjacent to the first handle (5) are respectively provided with a retaining arm matched with the retaining arm of the first handle (5), and the retaining arms are respectively provided with a ratchet.
8. The patella resurfacing fixation tool in knee arthroplasty according to claim 1, wherein: the cross section of the ligament clamping part (2) is rectangular, and the width of the clamping surface of the ligament clamping part (2) is larger than the thickness of the ligament clamping part (2).
9. The patella resurfacing fixation tool in knee arthroplasty according to claim 1, wherein: the width of the second handle (6) increases at the finger ring.
CN202110655299.4A 2021-06-11 2021-06-11 Patella trimming and fixing tool in knee joint replacement Pending CN113303953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110655299.4A CN113303953A (en) 2021-06-11 2021-06-11 Patella trimming and fixing tool in knee joint replacement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110655299.4A CN113303953A (en) 2021-06-11 2021-06-11 Patella trimming and fixing tool in knee joint replacement

Publications (1)

Publication Number Publication Date
CN113303953A true CN113303953A (en) 2021-08-27

Family

ID=77378620

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110655299.4A Pending CN113303953A (en) 2021-06-11 2021-06-11 Patella trimming and fixing tool in knee joint replacement

Country Status (1)

Country Link
CN (1) CN113303953A (en)

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Inventor after: Xu Yuan

Inventor after: Zeng Xiaoyan

Inventor after: Cai Youjun

Inventor after: Zhang Lixiang

Inventor after: Dai Yuchi

Inventor after: Ran Tianfei

Inventor after: Ke Song

Inventor before: Zeng Xiaoyan

Inventor before: Cai Youjun

Inventor before: Zhang Lixiang

Inventor before: Dai Yuchi

Inventor before: Ran Tianfei

Inventor before: Ke Song