CN212679217U - Plough-shaped bone rongeur - Google Patents

Abstract

The utility model discloses a plough-shaped bone rongeur, which comprises a tooth-shaped rongeur, an outer sleeve, a hollow inner pull rod, a bone withdrawal needle, a linkage mechanism and a handle, wherein the hollow inner pull rod is sleeved at the periphery of the bone withdrawal needle, the outer sleeve is sleeved at the periphery of the hollow inner pull rod, one end of the hollow inner pull rod is connected with the tooth-shaped rongeur, the other end of the hollow inner pull rod is connected with the handle, the hollow inner pull rod can move in a telescopic way under the control of the handle, one end of the bone withdrawal needle is connected to the handle, the other end of the bone withdrawal needle can pass through the tooth-shaped rongeur, the handle is used for controlling the linkage mechanism; under the control of the linkage mechanism, the outer sleeve and the bone withdrawal needle move in opposite directions, so that the toothed mouthpiece is opened or closed, and simultaneously, the bone withdrawal needle enters or leaves the toothed mouthpiece. The utility model discloses a plough bone rongeur can effectively sting the more solid siebol vertical plate of sclerotin and plough diaphysis, and stability is good, efficient and can not cause the apparatus harm and avoid surrounding tissue mucosa unnecessary injury.

Description

Plough-shaped bone rongeur

Technical Field

The utility model relates to the field of medical equipment, in particular to a plough-shaped bone rongeur for surgical operation.

Background

Transnasal butterfly microsurgery has become the most common minimally invasive neurosurgery approach for neurosurgery, and is suitable for various operations in, on and beside the saddle, such as pituitary adenoma, meningioma in the saddle region, craniopharyngioma and the like. The front wall of the sphenoid sinus and the back wall of the sphenoid sinus need to be removed to enter the saddle area through the nasal sphenoid approach. The plow-shaped corpus vertebrae part forms the sphenoid sinus front wall, and the pernasal sphenoid operation can be further completed by removing part of the plow-shaped corpus vertebrae part to smoothly enter the sphenoid sinus.

At present, the removal of the plow bone is mainly carried out in two ways: one of the more common ways is to use rongeur bites. Due to the fact that operation is performed under a transnasal cavity microscope, the operation space is narrow, a common rongeur cannot be deeply operated, particularly, a griseus vertical plate of a plow-shaped bone is in a triangular cone shape, the conventional rongeur using principle cannot be used for biting at a vertical angle, only after the front wall of the sphenoid sinus is opened, a vertebral lamina rongeur can be used for biting the front wall of the sphenoid sinus, the vertebral lamina rongeur is only suitable for biting the front wall of the sphenoid sinus with a thinner thickness, the plow-shaped bone body which is in the triangular cone shape and thick is difficult to bite, the stability is poor, the efficiency is low, meanwhile, sinus mucosa on the surface of the bone is easy to bite, bleeding is caused, electric coagulation hemostasis is needed, and damage; the nucleus pulposus rongeur is suitable for tissues with relatively soft texture due to the design characteristics, can only be used for taking out relatively thin bone tissues in the transnasal butterfly operation, and forcibly uses the plow-shaped bone which bites and removes the thick bone to cause the damage of instruments. The other way is to grind the plow-shaped bone by using a high-speed grinding drill, but the human-shaped plow-shaped bone is conical, the grinding drill has no force application point, the grinding drill can be pressed against the bone surface to grind the plow-shaped bone only by the force of wrists and fingers, the stability is poor, the grinding drill frequently slips from the bone surface to hurt the mucosa and soft tissues of peripheral nasal sinuses, and the grinding drill in high-speed rotation can penetrate through the front wall of the nasal sinuses to enter the cavities of the nasal sinuses and even the pituitary fossa by carelessly applying force, so that once the grinding drill is driven into the pituitary fossa to entangle normal pituitary tissues and pituitary stalks, even the irreversible pituitary function damage of the patient for the lifetime is caused.

Therefore, in order to solve the problem of biting and removing the triangular conical plow-shaped bone, particularly to treat the tip of the plow-shaped bone, a rongeur with a completely new structure is urgently needed to be provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a plough bone rongeur, the device sting remove efficient, sting the scope reliable, and can effectively save operator's physical power, shorten the operation time, can solve one of above-mentioned problem at least.

According to one aspect of the utility model, the utility model provides a plough-shaped bone rongeur, which comprises a toothed clenching, an outer sleeve, a hollow inner pull rod, a bone withdrawing needle, a linkage mechanism and a handle, wherein the hollow inner pull rod is sleeved on the periphery of the bone withdrawing needle, the outer sleeve is sleeved on the periphery of the hollow inner pull rod, one end of the hollow inner pull rod is connected with the toothed clenching, the other end of the hollow inner pull rod is connected with the handle, the hollow inner pull rod can move in a telescopic way under the control of the handle, one end of the bone withdrawing needle is connected to the handle, the other end of the bone withdrawing needle can pass through the toothed clenching, the handle is used for controlling the linkage mechanism, and;

under the control of the linkage mechanism, the outer sleeve and the bone withdrawal needle move in opposite directions, so that the toothed mouthpiece is opened or closed, and simultaneously, the bone withdrawal needle enters or leaves the toothed mouthpiece.

The utility model provides a plough bone rongeur of brand-new structure, its theory of operation does: the mouth piece is opened when entering the plow-shaped bone surface of the nasal cavity and biting the triangular conical bone surface, and simultaneously pushes away the mucosa on the surface of the bone to reduce the injury of the mucosa; when the handle is held to pressurize, the outer sleeve is pushed to pressurize and close the mouthpiece, meanwhile, the linkage mechanism is started to pull back the spicules, the toothed mouthpiece is embedded into the plough-shaped bone, and the biting range is firmly locked; the outer sleeve is pulled back when the handle is in a loose state, and the linkage mechanism pushes the bone withdrawing needle to extend out, so that the toothed mouthpiece is promoted to open and simultaneously the bitten broken bone is pushed. The utility model discloses a plough bone rongeur can effectively sting the more solid siebol vertical plate of sclerotin and plough diaphysis, and stability is good, efficient and can not cause the apparatus harm and avoid surrounding tissue mucosa unnecessary injury.

In some embodiments, the linkage mechanism comprises a rolling wheel, and a first groove and a second groove which are matched with the rolling wheel, wherein a mounting groove is formed in the hollow inner pull rod, the rolling wheel is rotatably mounted in the mounting groove, the first groove is formed in the inner wall of the outer sleeve, and the second groove is formed in the outer wall of the bone withdrawing needle. Therefore, the rolling wheel can be fixed on the inner wall of the mounting groove of the hollow inner pull rod through the central shaft, and the teeth on the lower surface of the rolling wheel are matched with the second groove on the outer wall surface of the bone withdrawing needle to drive the bone withdrawing needle; the teeth on the upper surface of the rolling wheel are matched with the first groove on the inner wall of the outer sleeve, and when the outer sleeve moves under the control of the handle, the rolling wheel can be driven to roll, so that the bone withdrawal needle is driven to move. The movement direction of the bone retreating needle of the utility model is opposite to the movement direction of the outer sleeve.

In some embodiments, the first groove and the second groove are both plural and are linearly arranged along the moving direction of the rolling wheel. Therefore, the rolling wheel can be ensured to have a certain travel range.

In some embodiments, the toothed mouthpiece includes an upper mouthpiece, a lower mouthpiece, and a fourth connector, the upper mouthpiece being hingedly connected to an end of the lower mouthpiece by the fourth connector, the fourth connector being rotatably mounted to the hollow inner pull rod. Therefore, the upper mouthpiece and the lower mouthpiece can rotate by taking the fourth connecting piece as an axis, so that the opening and closing functions are realized, and bone substances are bitten off.

In some embodiments, the bone withdrawal pin passes through the fourth connector. Therefore, under the control of the handle, the bone withdrawing needle can extend out of the fourth connecting piece to jack the upper and lower nipples and push out the bitten broken bones; and can also be retracted from the fourth connecting piece, so that the upper mouthpiece and the lower mouthpiece can be closed under the pushing of the outer sleeve.

In some embodiments, the upper and lower mouthpieces each comprise a body and a mouthpiece provided with the body, the mouthpiece of the upper and lower mouthpieces being in engagement with each other. Therefore, the upper and lower nipples with the biting teeth can be used for biting and removing the thick vertical plate of the sieve bone and the plough-shaped bone body. The utility model discloses a take tooth to chew mouth for the double-sided tooth's socket structure, it is reliable to the laminating of plough bone sclerotin, sting to remove efficient, sting the scope reliable, can effectively save the operator physical power, shorten the operation time.

In some embodiments, the ends of the bodies of the upper and lower mouthpieces on the side away from the teeth are blunt curved. Thereby, pushing the mucosa open is facilitated.

In some embodiments, the handle comprises a first handle body and a second handle body, the first handle body and the handle body of the second handle body are hinged with each other, one end of the first handle body is hinged with the outer sleeve, and one end of the second handle body is hinged with the hollow inner pull rod. Therefore, when a user holds the opened first handle body and the second handle body in a pressurizing mode, the first handle body drives the outer sleeve to move towards the direction of the toothed mouthpiece, so that the toothed mouthpiece is closed, and meanwhile the second handle drives the hollow inner pull rod and the toothed mouthpiece installed on the hollow inner pull rod to retract.

In some embodiments, the handle further comprises a resilient member having two ends connected to the first and second handle bodies, respectively. Therefore, the utility model discloses an elastic component is the spring leaf structure, and the user grips the handle pressurization back, under the effect of elastic component, and first handle and second handle under the closed condition originally can be flicked automatically, are the stand-by state. When the bone biting device is used, a user forcibly holds the handle, the first handle body and the second handle body are pressurized, the first handle body and the second handle body move oppositely, the first handle body pushes the outer sleeve to move towards the direction of the toothed mouthpiece through the second connecting piece, the toothed mouthpiece is closed, meanwhile, the second handle body pulls the hollow inner pull rod and the toothed mouthpiece arranged on the hollow inner pull rod to retract through the third connecting piece, the outer sleeve and the toothed mouthpiece move relatively, and then the bone biting is realized.

In some embodiments, the handle further comprises a first connecting piece, a second connecting piece and a third connecting piece, the first handle body is hinged with the handle body of the second handle body through the first connecting piece, one end of the first handle body is hinged with the outer sleeve through the second connecting piece, and one end of the second handle body is hinged with the hollow inner pull rod through the third connecting piece. This enables connection of the respective members.

In some embodiments, the first, second, and third connectors may each be a pin or a rivet.

The utility model has the advantages that:

the utility model provides a plough bone rongeur of brand-new structure, its theory of operation does: when entering the plow-shaped bone surface of the nasal cavity, the mouthpiece is opened when probing and biting the triangular conical ethmoid vertical plate and part of the plow-shaped bone body, and simultaneously pushes away the mucosa on the surface of the sclerotin to reduce the injury of the mucosa; when the handle is held to pressurize, the outer sleeve is pushed to pressurize and close the mouthpiece, meanwhile, the linkage mechanism is started to pull back the spicules, the toothed mouthpiece is embedded into the plough-shaped bone, and the biting range is firmly locked; the outer sleeve is pulled back when the handle is in a loose state, and the linkage mechanism pushes the bone withdrawing needle to extend out, so that the toothed mouthpiece is promoted to open and simultaneously the bitten broken bone is pushed. The utility model discloses a plough bone rongeur can effectively sting the more solid siebol vertical plate of sclerotin and plough diaphysis, and stability is good, efficient and can not cause the apparatus harm and avoid surrounding tissue mucosa unnecessary injury.

Drawings

FIG. 1 is a simplified structural schematic view of a plow-shaped bone rongeur according to an embodiment of the present invention;

FIG. 2 is one of the partial schematic structural views of the plow-shaped bone rongeur shown in FIG. 1;

FIG. 3 is a second partial schematic view of the plow-shaped bone rongeur shown in FIG. 1;

FIG. 4 is a third schematic view of a portion of the plow-shaped bone rongeur shown in FIG. 1;

figure 5 is a simplified structural schematic diagram of the toothed mouthpiece of the plow-shaped bone rongeur shown in figure 4.

Reference numerals in FIGS. 1 to 5: 1-toothed mouthpiece; 2-an outer sleeve; 3-hollow inner pull rod; 4-bone pin withdrawal; 5-a linkage mechanism; 6-a handle; 11-upper mouthpiece; 12-lower mouthpiece; 13-a fourth connection; 31-a mounting groove; 51-a rolling wheel; 52-first groove; 53-a second groove; 61-a first handle body; 62-a second shank; 63-an elastic member; 64-a first connector; 65-a second connector; 66-a third connector; 111-a body; 112-biting teeth.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 to 5 schematically show a plow-shaped bone rongeur according to an embodiment of the present invention.

As shown in figures 1 to 5, the plough-shaped bone rongeur comprises a toothed mouthpiece 1, an outer sleeve 2, a hollow inner pull rod 3, a bone withdrawal needle 4, a linkage mechanism 5 and a handle 6. The hollow inner pull rod 3 is sleeved on the periphery of the bone withdrawal needle 4, and the outer sleeve 2 is sleeved on the periphery of the hollow inner pull rod 3. One end of the hollow inner pull rod 3 is connected with the toothed mouthpiece 1, and the other end is connected with the handle 6. The hollow inner pull rod 3 can move telescopically under the control of the handle 6. The bone withdrawal needle 4 is connected at one end to the handle 6 and at the other end can be passed through the toothed mouthpiece 1. The handle 6 is used to control the linkage 5. The linkage mechanism 5 is arranged on the hollow inner pull rod 3 and is matched with the outer sleeve 2 and the bone withdrawing needle 4 to form a linkage system of the outer sleeve 2, the hollow inner pull rod 3 and the bone withdrawing needle 4.

Under the control of the linkage mechanism 5, the outer sleeve 2 and the bone withdrawal needle 4 move in opposite directions, so that the toothed mouthpiece 1 opens or closes, and simultaneously the bone withdrawal needle 4 enters or leaves the toothed mouthpiece 1.

As shown in fig. 1 to 3, the link mechanism 5 of the present embodiment includes a rolling wheel 51, and a first recess 52 and a second recess 53 that are fitted to the rolling wheel 51. The rolling wheel 51 of the present embodiment may be a spur gear, and the first recess 52 and the second recess 53 may be toothed grooves engaged with the spur gear. The hollow inner pull rod 3 is provided with a mounting groove 31, and the rolling wheel 51 is rotatably mounted on the groove wall of the mounting groove 31 through a central shaft, a bearing and other parts. The first groove 52 is arranged on the inner wall of the outer sleeve 2, and the second groove 53 is arranged on the outer wall of the bone withdrawal needle 4.

The first groove 52 and the second groove 53 are plural and are linearly arranged along the moving direction of the rolling wheel 51. Thereby, a certain stroke range of the rolling wheel 51 can be secured. The first grooves 52 of the present embodiment are formed along the longitudinal direction of the outer sleeve 2 and are arranged linearly; the second grooves 53 are arranged in a straight line along the length direction of the bone-removing needle 4. The length of the outer sleeve 2 of this embodiment is preferably 18cm, which both ensures sufficient depth into the sphenoid sinus or deep intracranial tissue via the nasal cavity, and facilitates manipulation in the confined space when using a surgical microscope.

The teeth on the lower surface of the rolling wheel 51 of the embodiment are matched with the second groove 53 on the outer wall surface of the bone withdrawal needle 4, so that the bone withdrawal needle 4 can be driven; the teeth on the upper surface of the rolling wheel 51 are matched with the first groove 52 on the inner wall of the outer sleeve 2, and when the outer sleeve 2 moves under the control of the handle 6, the rolling wheel 51 is driven to roll, so that the bone withdrawal needle 4 is driven to move. During use, the bone withdrawal needle 4 moves in the direction opposite to the direction of the outer sleeve 2.

As shown in fig. 4 to 5, the toothed mouthpiece 1 of the present embodiment includes an upper mouthpiece 11, a lower mouthpiece 12, and a fourth link 13. The ends of the upper mouthpiece 11 and the lower mouthpiece 12 are hinged with the hollow inner pull rod 3 through a fourth connecting piece 13. The fourth connecting member 13 is rotatably mounted on the hollow inner pull rod 3, and the fourth connecting member 13 of the present embodiment may be a pin. Therefore, the upper mouthpiece 11 and the lower mouthpiece 12 can rotate by taking the fourth connecting piece 13 as an axis, so as to realize the opening and closing functions and bite off bone substances.

The bone withdrawal needle 4 passes through the fourth connecting piece 13. Thus, under the control of the handle 6, the bone withdrawal needle 4 can extend out of the fourth connecting piece 13 to push the upper and lower nipples 11 and 12 open and push out the bitten broken bone; and also from the fourth connection 13, ensuring that the upper mouthpiece 11 and the lower mouthpiece 12 can be closed under the urging of the outer sleeve 2.

Each of upper mouthpiece 11 and lower mouthpiece 12 includes a body 111 and mouthpiece teeth 112 provided with body 111, and mouthpiece teeth 112 of upper mouthpiece 11 and lower mouthpiece 12 are engaged with each other. Thus, the upper and lower mouthpieces 11 and 12 with the teeth 112 cooperate to bite off the thick plow-shaped shaft. The utility model discloses a take tooth to chew 1 and be the double-sided tooth's socket structure, it is reliable to the laminating of plough bone sclerotin, sting to remove efficient, sting the scope reliable, can effectively save the operator physical power, shorten the operation time.

The ends of the body 111 of the upper mouthpiece 11 and the lower mouthpiece 12 on the side away from the teeth 112 are blunt curved. As shown in fig. 5, the tip of the upper side surface of the body 111 of the upper mouthpiece 11 is arc-shaped and the central angle of the arc-shaped section is an obtuse angle; the tip of the lower side surface of the body 111 of the lower mouthpiece 12 is arc-shaped and the central angle of the arc-shaped section is an obtuse angle. Thereby, pushing the mucosa open is facilitated.

The handle 6 of the present embodiment includes a first handle body 61, a second handle body 62, an elastic member 63, a first link 64, a second link 65, and a third link 66. The first handle body 61 is hinged with the handle body of the second handle body 62 through a first connecting piece 64, one end part of the first handle body 61 is hinged with the outer sleeve 2 through a second connecting piece 65, and one end part of the second handle body 62 is hinged with the hollow inner pull rod 3 through a third connecting piece 66. The elastic member 63 has both ends connected to the first and second handle bodies 61 and 62, respectively. The first, second and third connectors 64, 65, 66 may each be a pin or a rivet.

The elastic member 63 of the present embodiment may be a spring plate structure, when not in use, the first handle 61 and the second handle 62 of the handle 6 are combined together, and when the user grips the handle 6 and presses it, the first handle 6 and the second handle 6 in the originally closed state will automatically spring open under the action of the elastic member 63, and become a standby state. When the bone biting device is used, a user forcibly holds the handle 6 and pressurizes the first handle body 61 and the second handle body 62, so that the first handle body 61 and the second handle body 62 move oppositely, the first handle body 61 pushes the outer sleeve 2 to move towards the toothed mouthpiece 1 through the second connecting piece 65, so that the toothed mouthpiece 1 is closed, meanwhile, the second handle body 62 pulls the hollow inner pull rod 3 and the toothed mouthpiece 1 installed on the hollow inner pull rod 3 to retract through the third connecting piece 66, the outer sleeve 2 and the toothed mouthpiece 1 move oppositely, and therefore bone biting is achieved.

The utility model provides a plough bone rongeur of brand-new structure, its theory of operation does:

the tooth-shaped mouthpiece 1 is opened when entering the nasal cavity plow-shaped bone surface to bite the triangular conical ethmoid vertical plate and part of the plow-shaped bone body, and simultaneously pushes away the surface mucosa of the sclerotin to reduce the injury of the mucosa; when the handle 6 is held to pressurize, the outer sleeve 2 is pushed to pressurize and close the mouthpiece, meanwhile, the linkage mechanism 5 is started to pull back the bone needle 4, the toothed mouthpiece 1 is embedded into the plough-shaped bone, and the biting range is firmly locked; the outer sleeve 2 is pulled back when the handle 6 is in a loose state, and the linkage mechanism 5 pushes the bone withdrawing needle 4 to extend, so that the toothed mouthpiece 1 is promoted to open and simultaneously the bitten broken bone is pushed and squeezed. The utility model discloses a plough bone rongeur can effectively sting the more solid riddle vertical plate of sclerotin and partial plough diaphysis, and stability is good, efficient and can not cause the apparatus harm and avoid surrounding tissue mucosa unnecessary injury.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims (10)

1. The plow-shaped bone rongeur is characterized by comprising a toothed mouthpiece (1), an outer sleeve (2), a hollow inner pull rod (3), a bone withdrawal needle (4), a linkage mechanism (5) and a handle (6), the hollow inner pull rod (3) is sleeved on the periphery of the bone withdrawal needle (4), the outer sleeve (2) is sleeved on the periphery of the hollow inner pull rod (3), one end of the hollow inner pull rod (3) is connected with the toothed mouthpiece (1), the other end is connected with the handle (6), the hollow inner pull rod (3) can be controlled by the handle (6) to move in a telescopic way, one end of the bone withdrawal needle (4) is connected to the handle (6), the other end can penetrate through the toothed mouthpiece (1), the handle (6) is used for controlling the linkage mechanism (5), and the linkage mechanism (5) is arranged on the hollow inner pull rod (3) and is matched with the outer sleeve (2) and the bone withdrawal needle (4);

under the control of the linkage mechanism (5), the outer sleeve (2) and the bone withdrawal needle (4) move in opposite directions, so that the toothed mouthpiece (1) is opened or closed, and the bone withdrawal needle (4) enters or leaves the toothed mouthpiece (1).

2. The plow-shaped bone rongeur as claimed in claim 1, wherein the linkage mechanism (5) comprises a rolling wheel (51) and a first groove (52) and a second groove (53) which are matched with the rolling wheel (51), a mounting groove (31) is formed in the hollow inner pull rod (3), the rolling wheel (51) is rotatably mounted in the mounting groove (31), the first groove (52) is formed in the inner wall of the outer sleeve (2), and the second groove (53) is formed in the outer wall of the bone withdrawing needle (4).

3. The plow-shaped bone rongeur according to claim 2, wherein the first groove (52) and the second groove (53) are each plural and arranged linearly in a moving direction of the rolling wheel (51).

4. Plough-shaped bone rongeur according to claim 1, characterized in that the toothed mouthpiece (1) comprises an upper mouthpiece (11), a lower mouthpiece (12) and a fourth connector (13), the upper mouthpiece (11) and the end of the lower mouthpiece (12) being hinged by the fourth connector (13), the fourth connector (13) being rotatably mounted to the hollow inner pull rod (3).

5. Plough-shaped bone rongeur according to claim 4, characterized in that the bone withdrawal needle (4) passes through the fourth connector (13).

6. The plow-shaped bone rongeur according to claim 4, characterized in that the upper mouthpiece (11) and the lower mouthpiece (12) each comprise a body (111) and teeth (112) provided to the body (111), and the teeth (112) of the upper mouthpiece (11) and the lower mouthpiece (12) are engaged with each other.

7. The plow-shaped bone rongeur according to claim 5, characterized in that the side ends of the bodies (111) of the upper and lower nipples (11, 12) which are away from the teeth (112) are blunt-curved.

8. Plough-shaped bone rongeur according to any one of claims 1 to 7, characterized in that the handle (6) comprises a first handle body (61) and a second handle body (62), the first handle body (61) and the handle body of the second handle body (62) are hinged with each other, one end of the first handle body (61) is hinged with the outer sleeve (2), and one end of the second handle body (62) is hinged with the hollow inner pull rod (3).

9. Plough-shaped bone rongeur according to claim 8, characterized in that the handle (6) further comprises a resilient member (63), the resilient member (63) being connected at both ends to the first shank (61) and the second shank (62), respectively.

10. The plow-shaped bone rongeur according to claim 8, wherein the handle (6) further comprises a first connecting member (64), a second connecting member (65) and a third connecting member (66), the first handle body (61) is hinged with the handle body of the second handle body (62) through the first connecting member (64), one end of the first handle body (61) is hinged with the outer sleeve (2) through the second connecting member (65), and one end of the second handle body (62) is hinged with the hollow inner pull rod (3) through the third connecting member (66).

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