CN114041864A

Movatterモバイル変換

Info

Publication number: CN114041864A
Application number: CN202111381307.7A
Authority: CN
Inventors: 唐广胜; 陈孝东; 王凯
Original assignee: Kangda College Of Nanjing Medical University
Current assignee: Kangda College Of Nanjing Medical University
Priority date: 2021-11-20
Filing date: 2021-11-20
Publication date: 2022-02-15
Anticipated expiration: 2041-11-20
Also published as: CN114041864B

Abstract

The invention relates to the technical field of medical instruments, in particular to a fracture internal fixation device with a locking and fastening structure, which comprises a titanium plate, wherein a fixing hole is formed in the titanium plate, limiting holes are formed in the upper side and the lower side of the fixing hole, and a connecting clamping groove is formed in the bottom of the right side of the titanium plate; go into the bone nail, it wears to establish the inside of fixed orifices, the one end of going into the bone nail is connected with can tearing the head, and the other end of going into the bone nail is connected with the spiral part, it is equipped with the connecting rod with the junction that can tear the head to go into the bone nail, and the inside of removable head is equipped with the grip block, the right side of grip block is connected with the protective cover. According to the detachable head, the detachable head is made of metal, after a patient removes a titanium plate, the absorbable bone screw does not need to be pulled out, and the connecting rod and the detachable head on the bone screw can be separated from each other only by driving the outer sleeve column and the inner sleeve column to move outwards through the clamping plate in the detachable head, so that the quick detachment work of the detachable head is completed, and the operation efficiency is greatly improved.

Description

Fracture internal fixation device with locking and fastening structure

Technical Field

The invention relates to the technical field of medical instruments, in particular to a fracture internal fixation device with a locking and fastening structure.

Background

Fracture refers to the continuous complete or partial breakdown of bone structure. It is common to children and the elderly, and occurs in the middle-aged and young. Patients often have one site fractured and a few multiple fractures. After timely and proper treatment, most patients can recover the original functions, and a few patients can leave sequelae with different degrees. The internal fixation of fracture is a method for treating fracture patients in clinical orthopedics department, can support bones, and can maintain the firmness of reduction in vivo by using devices such as steel plates, steel needles and the like after the reduction of the fracture, thereby further assisting the smooth growth of the bones.

When the existing internal fracture fixing device is used at a special position, the internal fracture fixing device needs to be dismantled after skeleton restoration, otherwise, the normal movement of a human body is influenced, or the normal development and growth of the skeleton are influenced, the internal fracture fixing device usually uses a steel needle to fix a steel plate to the skeleton, the steel needle cannot be absorbed by the human body, the internal fracture fixing device needs to be taken out one by one, the internal fracture fixing device is difficult to take out, and even can cause secondary injury to a patient, and therefore the internal fracture fixing device with the locking and fastening structure is provided.

Disclosure of Invention

The invention aims to provide a fracture internal fixation device with a locking and fastening structure, which solves the problems that when the fracture internal fixation device provided by the background technology is used at a special part, the fracture internal fixation device needs to be disassembled after the skeleton is restored, otherwise the normal movement of the human body is influenced, or the normal development and growth of the skeleton are influenced, the fracture internal fixation device usually uses steel needles to fix the skeleton by using steel plates, the steel needles cannot be absorbed by the human body and need to be taken out one by one, and the fracture internal fixation device is difficult to take out and even causes secondary injury to a patient.

In order to achieve the purpose, the invention provides the following technical scheme: a fracture internal fixation device provided with a locking fastening structure, comprising:

the device comprises a titanium plate, a fixing hole is formed in the titanium plate, limiting holes are formed in the upper side and the lower side of the fixing hole, and a connecting clamping groove is formed in the bottom of the right side of the titanium plate;

the bone-entering nail penetrates through the fixing hole, one end of the bone-entering nail is connected with a detachable head, the other end of the bone-entering nail is connected with a spiral part, a connecting rod is arranged at the joint of the bone-entering nail and the detachable head, a clamping plate is arranged inside the detachable head, and the right side of the clamping plate is connected with a protective cover;

the outer sleeve column is fixed on the inner side of the clamping plate, the inner sleeve column is arranged below the outer sleeve column, a groove is formed in the surface of the clamping plate, an elastic rubber ring is arranged inside the groove, a limiting groove is formed in the joint of the detachable head and the clamping plate, and a silica gel ring is installed at the joint of the connecting rod and the detachable head.

Preferably, the titanium plate is further provided with:

the inner groove is formed in the left side of the titanium plate, a detection rod is arranged inside the inner groove, and the middle of the detection rod is connected with a pressure sensor.

Preferably, the titanium plate is further provided with:

the locating plate, it is installed one side of titanium plate, spacing tip is worn to be equipped with in the inside of locating plate, and the one end of spacing tip is fixed with spacing needle, spacing needle runs through in the inside in spacing hole.

Preferably, the locating plate still is equipped with:

the transmission rod is arranged at the lower side inside the positioning plate, a knob is fixed at the right side of the transmission rod, and the transmission rod penetrates through the inside of the positioning plate;

the driving gear is connected to the output end of the transmission rod, the left side of the driving gear is connected with a driven gear, the middle of the driven gear is provided with a connecting shaft, and the tail end of the connecting shaft is connected with a clamping rod.

Preferably, the clamping rod is clamped with the titanium plate through the connecting clamping groove, the clamping rod rotates on the driven gear through the connecting shaft, the driven gear is meshed with the driving gear, and the driving gear is connected with the knob key through the transmission rod.

Preferably, the fixing hole is of a T-shaped structure, the size of the fixing hole is matched with that of the detachable head and the bone screw, and the depth of the fixing hole is larger than the thickness of the detachable head.

Preferably, through elastic rubber circle elastic connection between the grip block, and recess and elastic rubber circle constitute and partly encircle the structure to the grip block passes through the spacing groove and realizes sliding movement on removable head.

Preferably, the inner sleeve column is movably connected with the outer sleeve column, the inner sleeve column is perpendicular to the clamping plate, the outer sleeve column clamping plate is perpendicular to the clamping plate, and a through hole matched with the inner sleeve column and the outer sleeve column in size is formed in the connecting rod.

Preferably, the connecting rod runs through the inside of silica gel circle, and silica gel circle and removable head adhesive bonding are connected.

Preferably, the positioning plate is provided with a through hole matched with the fixing hole, the bottom of the titanium plate is of an arc-shaped structure, and the positioning plate is matched with the titanium plate in overall dimension.

Compared with the prior art, the invention provides a fracture internal fixation device with a locking and fastening structure, which has the following beneficial effects:

1. the titanium plate is used as the main body of the internal fixing device, a supporting effect is provided after the fracture of a patient, the bone-in nail matched with the titanium plate is made of an absorbable material, the bone-in nail can fix the titanium plate and the skeleton, all the metal bone-in nails are prevented from being removed when the titanium plate is removed, and the problem that the secondary injury can be caused to the patient when the titanium plate is removed is solved;

2. according to the invention, the detachable head is made of metal, after a patient removes the titanium plate, the absorbable bone screw is not required to be pulled out, and the connecting rod on the bone screw can be separated from the detachable head only by driving the outer sleeve column and the inner sleeve column to move outwards through the clamping plate in the detachable head, so that the quick detachment work of the detachable head is completed, and the operation efficiency is greatly improved;

3. the tension on the detection rods on the two sides of the pressure sensor can be detected through the pressure sensor arranged on the detection rod, after a patient performs an operation, the pressure sensor is attached to the skeleton of the patient, a hospital can set corresponding mobile phone software to receive the detection result of the pressure sensor, the development conditions of the skeleton are different in a certain time due to different growth levels of the patient, the bone-entering nail can be driven to be torn up and down in the process of the bone growth, the movement condition of the bone-entering nail can be monitored by detecting the tension on the detection rod connected with the bone-entering nail, the patient is reminded to go to the hospital for rechecking regularly, and a doctor can also quickly judge whether to dismantle a titanium plate according to different data;

4. according to the invention, the positioning plate can be used for quickly positioning and supporting the titanium plate in the process of connecting the titanium plate and the skeleton, the titanium plate and the positioning plate are quickly connected by mutually clamping the connecting clamping groove and the clamping rod, the knob is screwed to drive the transmission rod to rotate, so that the driven gear is driven to rotate by the driving gear, the connecting clamping groove is unlocked, and the effect of quickly separating the titanium plate and the positioning plate is realized.

Drawings

FIG. 1 is a schematic view of the overall structure of a titanium plate according to the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic view of the bone screw of the present invention;

FIG. 4 is a schematic side view of the bone screw of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 3 according to the present invention.

In the figure: 1. a titanium plate; 2. a fixing hole; 3. a limiting hole; 4. a connecting clamping groove; 5. a limit needle; 6. inserting bone screws; 7. a spiral portion; 8. a limiting end part; 9. positioning a plate; 10. a knob; 11. a transmission rod; 12. a connecting rod; 13. the head can be disassembled; 14. a clamping plate; 15. a protective cover; 16. sleeving a column outside; 17. an elastic rubber ring; 18. a groove; 19. an inner sleeve column; 20. a silica gel ring; 21. a limiting groove; 22. a driven gear; 23. a driving gear; 24. a clamping rod; 25. a connecting shaft; 26. a pressure sensor; 27. a detection lever; 28. an inner tank.

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.

As shown in fig. 1 and 2, an internal fracture fixation device provided with a locking fastening structure includes: the titanium plate 1, the inside of the titanium plate 1 is equipped with the fixed orifices 2, and the upper and lower both sides of the fixed orifices 2 are equipped with the spacing hole 3, the right side bottom of the titanium plate 1 is equipped with the connecting slot 4, the inside groove 28, it is set up on the left side of the titanium plate 1, and the inside of the inside groove 28 is equipped with the measuring bar 27, the middle part of the measuring bar 27 is connected with the pressure sensor 26, the pressure sensor 26 can detect the pulling force on the measuring bar 27 on both sides of the pressure sensor 26 through the pressure sensor 26 on the measuring bar 27, the patient can be operated, the pressure sensor 26 is mutually jointed with the patient's skeleton, the hospital can set up the corresponding mobile phone software, receive the detection result of the pressure sensor 26, because the patient's growth level is different, the skeleton development condition is also different in a certain time, can drive the bone entering nail 6 to tear up and down in the process of the bone growing, through detecting the pulling force on the measuring bar 27 connected with the bone entering nail 6, therefore, the moving condition of the bone screw 6 can be monitored, a patient is reminded to go to a hospital for reexamination at regular intervals, and a doctor can also quickly judge whether the titanium plate 1 is removed according to different data.

As shown in fig. 3 to 5, an internal fracture fixation device provided with a locking fastening structure, comprising: the bone-in nail 6 is arranged in the fixing hole 2 in a penetrating manner, one end of the bone-in nail 6 is connected with a detachable head 13, the other end of the bone-in nail 6 is connected with a spiral part 7, the arranged titanium plate 1 is used as a main body of an internal fixing device to provide a supporting effect after a patient is fractured, the bone-in nail 6 matched with the titanium plate 1 is made of an absorbable material, the bone-in nail 6 can fix the titanium plate 1 and bones, the situation that the titanium plate 1 needs to be detached from all the bone-in nails 6 made of metal materials when the titanium plate 1 is detached is avoided, the problem that the titanium plate 1 may cause secondary injury to the patient when the titanium plate 1 is detached is solved, a connecting rod 12 is arranged at the joint of the bone-in nail 6 and the detachable head 13, a clamping plate 14 is arranged in the detachable head 13, the connecting rod 12 penetrates through the inside of a silica gel ring 20, the silica gel ring 20 is connected with the detachable head 13 in an adhesion manner, the right side of the clamping plate 14 is connected with a protective cover 15, the fixing hole 2 is of which is of a T-shaped structure, the size of the fixing hole 2 is matched with that of the detachable head 13 and the bone screw 6, and the depth of the fixing hole 2 is larger than the thickness of the detachable head 13; an outer sleeve column 16 fixed on the inner side of the clamping plate 14, an inner sleeve column 19 arranged below the outer sleeve column 16, the inner sleeve column 19 movably connected with the outer sleeve column 16, the inner sleeve column 19 being perpendicular to the clamping plate 14, the outer sleeve column 16 being perpendicular to the clamping plate 14, a through hole matched with the inner sleeve column 19 and the outer sleeve column 16 in size being arranged inside the connecting rod 12, a groove 18 being arranged on the surface of the clamping plate 14, an elastic rubber ring 17 being arranged inside the groove 18, a limiting groove 21 being arranged at the joint of the detachable head 13 and the clamping plate 14, a silicon rubber ring 20 being arranged at the joint of the connecting rod 12 and the detachable head 13, the clamping plates 14 being elastically connected with each other through the elastic rubber ring 17, the groove 18 and the elastic rubber ring 17 forming a semi-surrounding structure, the clamping plate 14 being capable of sliding movement on the detachable head 13 through the limiting groove 21, the detachable head 13 being made of metal, after the titanium plate 1 is removed by the patient, need not to extract absorbable income bone nail 6, only need drive outer sleeve post 16 and interior sleeve post 19 through the grip block 14 that can tear in the head 13 open and outwards remove, can make connecting rod 12 and the removable head 13 looks mutual separation on the income bone nail 6 to accomplish the quick dismantlement work that can tear head 13 open, improved operation efficiency greatly.

As shown in fig. 2 and 5, an internal fracture fixation device provided with a locking fastening structure includes: the positioning plate 9 is installed on one side of the titanium plate 1, a through hole matched with the fixing hole 2 is formed in the positioning plate 9, the bottom of the titanium plate 1 is of an arc-shaped structure, the positioning plate 9 is matched with the shape and size of the titanium plate 1, a limiting end portion 8 penetrates through the positioning plate 9, a limiting needle 5 is fixed at one end of the limiting end portion 8, the limiting needle 5 penetrates through the limiting hole 3, a transmission rod 11 is installed on the lower side of the inside of the positioning plate 9, a knob 10 is fixed on the right side of the transmission rod 11, and the transmission rod 11 penetrates through the inside of the positioning plate 9; a driving gear 23 connected to the output end of the transmission rod 11, a driven gear 22 connected to the left side of the driving gear 23, a connecting shaft 25 installed in the middle of the driven gear 22, a clamping rod 24 connected to the end of the connecting shaft 25, the clamping rod 24 being engaged with the titanium plate 1 through a connecting slot 4, the clamping rod 24 being rotated on the driven gear 22 through the connecting shaft 25, the driven gear 22 being engaged with the driving gear 23, the driving gear 23 being connected with a knob 10 through the transmission rod 11, the positioning plate 9 being capable of fast positioning during the connection of the titanium plate 1 with the skeleton and supporting the titanium plate 1, the titanium plate 1 being fast connected with the positioning plate 9 through the connecting slot 4 and the clamping rod 24, the knob 10 being twisted to drive the transmission rod 11 to rotate, thereby driving the driven gear 22 to rotate through the driving gear 23, and the connecting clamping groove 4 is unlocked, so that the effect of quickly separating the titanium plate 1 from the positioning plate 9 is realized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A fracture internal fixation device with a locking and fastening structure, comprising:

the device comprises a titanium plate (1), wherein a fixing hole (2) is formed in the titanium plate (1), limiting holes (3) are formed in the upper side and the lower side of the fixing hole (2), and a connecting clamping groove (4) is formed in the bottom of the right side of the titanium plate (1);

the bone entering nail (6) penetrates through the fixing hole (2), one end of the bone entering nail (6) is connected with a detachable head (13), the other end of the bone entering nail (6) is connected with a spiral part (7), a connecting rod (12) is arranged at the connecting position of the bone entering nail (6) and the detachable head (13), a clamping plate (14) is arranged inside the detachable head (13), and the right side of the clamping plate (14) is connected with a protective cover (15);

outer cover post (16), it is fixed the inboard of grip block (14), the below of outer cover post (16) is equipped with interior cover post (19), the surface of grip block (14) is seted up flutedly (18), and the inside of recess (18) is provided with elastic rubber circle (17), spacing groove (21) have been seted up with the junction of grip block (14) to detachable head (13), and silica gel circle (20) are installed with the junction of detachable head (13) in connecting rod (12).

2. The internal fracture fixation device provided with a locking and fastening structure according to claim 1, wherein the titanium plate (1) is further provided with:

and an inner groove (28) which is arranged on the left side of the titanium plate (1), wherein a detection rod (27) is arranged inside the inner groove (28), and the middle part of the detection rod (27) is connected with a pressure sensor (26).

3. The internal fracture fixation device provided with a locking and fastening structure according to claim 1, wherein the titanium plate (1) is further provided with:

the positioning plate (9) is installed on one side of the titanium plate (1), a limiting end portion (8) is arranged in the positioning plate (9) in a penetrating mode, a limiting needle (5) is fixed to one end of the limiting end portion (8), and the limiting needle (5) penetrates through the inside of the limiting hole (3).

4. A fracture internal fixation device provided with a locking and fastening structure according to claim 3, wherein the positioning plate (9) is further provided with:

the transmission rod (11) is arranged at the lower side inside the positioning plate (9), a knob (10) is fixed at the right side of the transmission rod (11), and the transmission rod (11) penetrates through the inside of the positioning plate (9);

the driving gear (23) is connected to the output end of the transmission rod (11), the left side of the driving gear (23) is connected with a driven gear (22), the middle of the driven gear (22) is provided with a connecting shaft (25), and the tail end of the connecting shaft (25) is connected with a clamping rod (24).

5. The internal fracture fixation device with the locking and fastening structure is characterized in that the clamping rod (24) is clamped with the titanium plate (1) through the connecting clamping groove (4), the clamping rod (24) rotates on the driven gear (22) through the connecting shaft (25), the driven gear (22) is meshed with the driving gear (23), and the driving gear (23) is connected with the knob (10) through the transmission rod (11).

6. The internal fracture fixation device provided with the locking and fastening structure is characterized in that the fixing hole (2) is of a T-shaped structure, the fixing hole (2) is matched with the sizes of the detachable head (13) and the bone screw (6), and the depth of the fixing hole (2) is larger than the thickness of the detachable head (13).

7. The internal fracture fixation device provided with the locking and fastening structure is characterized in that the clamping plates (14) are elastically connected through the elastic rubber ring (17), the groove (18) and the elastic rubber ring (17) form a semi-surrounding structure, and the clamping plates (14) realize sliding movement on the detachable head (13) through the limiting groove (21).

8. The internal fracture fixation device with the locking and fastening structure is characterized in that the inner sleeve column (19) is movably connected with the outer sleeve column (16), the inner sleeve column (19) is perpendicular to the clamping plate (14), the outer sleeve column (16) is perpendicular to the clamping plate (14), and the connecting rod (12) is internally provided with through holes matched with the sizes of the inner sleeve column (19) and the outer sleeve column (16).

9. The internal fracture fixation device provided with the locking and fastening structure is characterized in that the connecting rod (12) penetrates through the inside of the silicone ring (20), and the silicone ring (20) is connected with the detachable head (13) in an adhesion manner.

10. The internal fracture fixation device with the locking and fastening structure is characterized in that the positioning plate (9) is provided with a through hole matched with the fixing hole (2), the bottom of the titanium plate (1) is of an arc-shaped structure, and the positioning plate (9) is matched with the titanium plate (1) in external dimension.