CN213156206U - Instrument is retrieved to four limbs tubulose marrow cavity division marrow reaming and piece bone - Google Patents

Abstract

The utility model provides a marrow reaming and piece bone recovery instrument are opened to four limbs tubulose marrow chamber, including rotatory bone knife and the bone storehouse of digging, rotatory bone knife of digging is dug by the handle pole and has the rotation of helical blade and digs the bone tool bit and constitute, and rotatory bone knife of digging is crescent by the helical blade diameter of head end to the tail end, the bone storehouse is telescopic structure, and on bone storehouse cover was established and is fixed in the rotation and dig the bone knife, and on the handle pole was located to the pot head in bone storehouse, other pot head was established to the tail end department of rotatory bone knife of digging. The intramedullary nail fixing device aims to solve the problem that the bone loss can be caused by certain defects of the existing proximal intramedullary nail fixing technology of the tubular femur of the limbs. Belongs to the field of limb tubular bone repair and bone grafting treatment.

Description

Instrument is retrieved to four limbs tubulose marrow cavity division marrow reaming and piece bone

Technical Field

The utility model relates to a marrow reaming and chip bone recovery tool for limb tubular marrow cavities, which belongs to the field of femoral repair treatment.

Background

Fracture of limbs is common, and complications such as fracture nonunion, delayed union, eccentric fixation, internal fixation failure (fracture of steel plate and screw), large incision and the like exist when steel plate screws are used for fixation. The intramedullary nail fixation has the advantages of better fixation effect, small wound and the like due to the fixation of the central shaft, and is more and more paid attention to and widely applied in clinic.

Intramedullary nail for fixing limb tubular bone, which comprises the following steps: 1. adopting intraspinal canal and brachial plexus anesthesia; 2. taking the horizontal position, abducting the affected limb or traction reduction by a traction table; sterilizing iodine tincture and alcohol operation area, and spreading sterile sheet; 3. the fracture reduction is carried out and kept under fluoroscopy; 4. an incision is made with the near end or the far end vertex as the center, the length is about 4cm, the skin, the subcutaneous tissue and the deep fascia are incised, the vertex of the extension line of the tubular marrow cavity is touched, and the long guide needle is inserted. C-arm fluoroscopy proves that the guide pin is in the medullary cavity and the fracture reduction is satisfactory. 5. Expanding cortex lycii at the vertex by using a triangular mouth gag and enabling the cortex lycii to enter the bone, then pulling out the mouth gag, opening the marrow, selecting an intramedullary nail main nail with satisfactory length (generally 20-24 cm) and diameter, inserting the intramedullary nail along a guide pin, and enabling the perspective needle insertion depth to be satisfactory; 6, installing an intramedullary nail guide frame, and fixing the far end and the near end of the intramedullary nail by using locking nails; and 7, after fluoroscopy is satisfied, the incision is flushed by normal saline, sutured and bound, and the operation is finished. However, the existing method causes partial bone loss after the medullary cavity is opened, human bones are very precious, the price on the market is expensive, and great resource waste exists.

For example, PFNA is used to treat intertrochanteric femoral fractures:

pfna, a total anti-rotation proximal femoral intramedullary nail. The method is used for treating proximal intertrochanteric fracture and infratrochanteric fracture of old people, and comprises the following general operation steps: 1. intraspinal anesthesia is adopted; 2. taking the horizontal position on the traction bed; sterilizing iodine tincture and alcohol operation area, and spreading sterile sheet; 3. the fracture reduction is carried out and kept under fluoroscopy; 4. taking the greater trochanter point of femur as a central incision, the length of which is about 4cm, incising the skin, subcutaneous tissues and deep fascia, touching the apex of the greater trochanter of femur, inserting a long guide needle, and penetrating into the medullary cavity of the femur; 5. performing perspective, and determining that the guide pin enters a far-end medullary cavity; 6. after the position of the guide pin and the fracture reduction are satisfied, a PFNA nail with satisfactory length (generally 20-24 cm) and diameter is selected, the intramedullary nail is inserted along the guide pin, and the perspective needle insertion depth is satisfied; 7. installing a PFNA guide frame, driving the screw knife locking nail into the femoral neck and the femoral head, and locking other locking nails; 8. after the fluoroscopy is satisfied, the incision is washed by normal saline, sutured and bandaged, and the operation is finished. However, the existing method causes partial bone loss after the medullary cavity is opened, but human bones are also very precious, the price on the market is also expensive, and great resource waste exists.

Disclosure of Invention

The utility model provides a reaming instrument of four limbs tubulose marrow cavity to there is certain defect in nail fixed technology in solving present four limbs tubulose marrow, can cause bone loss, extravagant problem.

In order to achieve the purpose, the tool for reaming marrow and recovering chipped bones in the tubular marrow cavity of the four limbs comprises a rotary bone-digging knife and a bone bin, wherein the rotary bone-digging knife comprises a knife handle rod and a rotary bone-digging knife head with a spiral knife edge, the diameter of the spiral knife edge from the head end to the tail end of the rotary bone-digging knife head is gradually increased, the bone bin is of a sleeve type structure, the bone bin is fixedly sleeved on the rotary bone-digging knife, one end of the bone bin is sleeved on the knife handle rod, and the other end of the bone bin is sleeved at the tail end of the rotary bone-digging knife head.

In the tool, a stud with an external thread is fixedly sleeved on the tool handle rod, a bone bin limiting blocking piece is arranged at the other end of the stud opposite to the rotary bone digging cutter head, and an internal thread is arranged at one end of the bone bin and is in threaded connection with the stud;

in the tool, the rotary bone digging cutter head is replaced by a rotary ring, the rotary ring is of a cylindrical structure, one end of the rotary ring is in butt joint with the end part of the cutter handle rod, the other end of the rotary ring is of an open structure, and the open end of the rotary ring is of a sawtooth structure which is distributed along the circumferential direction.

Compared with the prior art, the utility model discloses a set up the bone storehouse on rotatory bone knife of digging, can collect the bone storehouse in digging the bone and changeing the bone that the hole will dig out, recycle in addition, bone loss has been avoided, it is extravagant, and this structure is very simple, be exactly with current instrument of opening the marrow, change into and use the rotation to dig and increase the bone storehouse structure on the bone knife basis, can realize the trompil, on the basis function of reaming marrow, increase the function that the piece bone was retrieved, and three step realizes in step, do not increase the operation degree of difficulty and operating time, the operation is bled. The recovered scrap bone is implanted into the fracture end, so that the bone healing time is shortened and the bone healing strength is enhanced. The complication such as rejection reaction of allogeneic bone and commercial bone does not exist. The design is ingenious, the manufacture is convenient, the cost is low, the method is suitable for large-scale popularization and application, and the method has extremely good practical application value.

Drawings

FIG. 1 is a schematic view showing the structure of the instrument for reaming a medullary cavity of example 1;

fig. 2 is a schematic structural view of the instrument for reaming a medullary cavity of example 2.

Detailed Description

To further clarify the objects, technical solutions and advantages of the present invention, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings.

Example 1

Referring to fig. 1, this embodiment provides a marrow reaming and debris bone recovery instrument is opened in four limbs tubulose marrow cavity, dig osteotome 1 and bone storehouse 2 including the rotation, the rotation is dug osteotome 1 and is dug osteotome head 12 by handle of a knife pole 11 and the rotation that has the helical blade and constitute, the rotation is dug osteotome head 12 and is increased gradually by the spiral blade diameter of head end to tail end, the cover is established and is fixed with the double-screw bolt 3 that has the external screw thread on the handle of a knife pole 11, the other end of the double-screw bolt 3 relative with the rotation of digging osteotome head 12 is provided with the spacing separation blade 4 of bone storehouse, bone storehouse 2 is the telescopic structure that the cover is fixed in on the rotation is dug osteotome 1, the pot head of bone storehouse 2 is located on handle of a pole 11, and this tip of bone storehouse 2 has the internal thread and with double-.

When femoral medullary cavity trompil, earlier with the mouth gag opening, insert the pulp cavity with the guide pin again, the guide pin inserts about 15cm of the degree of depth in pulp cavity, along leading-in diameter of guide pin for the rotation about 16.5mm dig osteotome 1 and bone storehouse 2, use general handle or the electric drill that has T type handle to rotate rotatory dig osteotome 1 reaming to the limit position, take out the rotation again and dig osteotome 1, bone storehouse 2 and guide pin, for rotatory dig osteotome 1 rotate bone storehouse 2 in order to slowly take off bone storehouse 2, what collect in the bone storehouse 2 promptly was the bone that digs out when reaming.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Example 2

Referring to fig. 2, this embodiment provides a marrow reaming and piece bone recovery instrument is opened in four limbs tubulose marrow cavity, dig bone knife 1 and bone storehouse 2 including the rotation, the rotation is dug bone knife 1 and is dug bone tool bit 12 by handle of a knife pole 11 and rotation and constitute, the rotation is dug bone tool bit 12 and is the swivel, the swivel is the tubular structure, one end docks with the tip of handle of a knife pole 11, the other end is open structure, and the open end is the serration structure of arranging along circumference, the cover is established and is fixed with the double-screw bolt 3 that has the external screw thread on the handle of a knife pole 11, the other end of the double-screw bolt 3 relative with the rotation is dug bone tool bit 12 is provided with the spacing separation blade 4 in bone storehouse, bone storehouse 2 is established for the cover and is fixed in the telescopic structure on the rotation is dug bone knife 1, the one end cover in bone storehouse 2 is located on handle of a pole 11, and this tip in.

When femoral medullary cavity trompil, earlier with the mouth gag opening, insert the pulp cavity with the guide pin again, the guide pin inserts about 15cm of the degree of depth in pulp cavity, along leading-in diameter of guide pin for the rotation about 16.5mm dig osteotome 1 and bone storehouse 2, use general handle or the electric drill that has T type handle to rotate rotatory dig osteotome 1 reaming to the limit position, take out the rotation again and dig osteotome 1, bone storehouse 2 and guide pin, for rotatory dig osteotome 1 rotate bone storehouse 2 in order to slowly take off bone storehouse 2, what collect in the revolving ring is the bone that digs out when reaming, bone storehouse 2 is used for protecting the soft tissue.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (3)

1. The utility model provides a tool is retrieved to four limbs tubulose marrow chamber marrow reaming and piece bone which characterized in that: including rotatory bone knife (1) and bone storehouse (2) of digging, rotatory bone knife (1) of digging is dug bone tool bit (12) by handle pole (11) and the rotation that has spiral cutting edge and is constituteed, and rotatory bone tool bit (12) of digging is crescent by the spiral cutting edge diameter of head end to tail end, bone storehouse (2) are telescopic structure, and bone storehouse (2) cover is established and is fixed in on rotatory bone knife (1) of digging, and on handle pole (11) was located to the one end cover in bone storehouse (2), other end cover was established to the rotatory tail end department of digging bone tool bit (12).

2. The instrument of claim 1, wherein: the cutter handle rod (11) is sleeved with a stud (3) with an external thread, the other end of the stud (3) opposite to the rotary bone digging cutter head (12) is provided with a bone bin limiting blocking piece (4), and one end of the bone bin (2) is provided with an internal thread and is in threaded connection with the stud (3).

3. The instrument of claim 1, wherein: the rotary bone digging cutter head (12) is replaced by a rotary ring which is of a cylindrical structure, one end of the rotary ring is in butt joint with the end part of the cutter handle rod (11), the other end of the rotary ring is of an open structure, and the open end of the rotary ring is of a sawtooth structure which is distributed along the circumferential direction.

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