TWM635574U - Bone awl - Google Patents

Abstract

The creation provides a bone awl comprising: a shaft and a positioning needle. The shaft has an action section and a force section, and a diameter of the action section is smaller than a diameter of the force section, and the shaft is provided with a channel penetrating the action section and the force section. The positioning needle is movably arranged in the channel, and one end of the positioning needle protrudes out of the action section from the channel. When the osteotome was removed from the bones, the function can take don't bone tissue at the same time, and through the perforating positioning needle can reach the effect of direct positioning, and make the bone chisel carved bone, guiding orientation and shave their bone tissue function, let the doctor reduce replacement tool in the process of operation steps, to increase convenience for doctors surgery.

Description

Osteotome

This creation relates to the field of surgical tools, in particular to pedicle osteotome for spinal surgery.

Osteotome is a surgical medical tool commonly used in orthopedic clinical practice. Osteotome is mainly used for repairing bone surface and taking bone. Among them, the osteotome used for spinal surgery is mainly used to treat herniated intervertebral disc or lumbar spinal stenosis. During the operation, the doctor usually uses the osteotome to open the lamina of the pedicle (called "laminectomy"), so that The doctor sees the spinal canal. During the procedure, the nerve roots are removed, exposing the herniated disc. Doctors remove the loose part of the disc to relieve pressure on the nerve.

However, the known pedicle osteotome only has the function of cutting open the bone. If other bone tissues (such as the loose intervertebral disc part) are to be scraped (removed), other surgical tools for scraping must be used, which causes doctors to Inconvenience in operation, therefore, need to provide a kind of simple and easy multifunctional osteotome, so that the doctor can reduce the step of replacement tool in operation process, to increase the convenience of doctor's operation.

In view of this, the creation needs to provide a multifunctional osteotome, which has the functions of chiseling, guiding and positioning, and scraping bone tissue, so as to reduce the steps of the doctor in replacing tools during the operation, thereby increasing the convenience of the doctor's operation.

An osteotome provided by the invention comprises: a shaft rod and a chisel positioning pin. The shaft has an action section and a force application section, and the diameter of the action section is smaller than the diameter of the force application section, and the shaft is provided with an axial passage hole penetrating the action section and the force application section. The drilling positioning pin is movably arranged in the channel perforation, and one tip of the drilling positioning pin protrudes from the channel perforation to the working section.

In one embodiment, the osteotome further includes a silicone handle fixed on the force-applying section.

In one embodiment, the outer surface of the silicone handle includes a plurality of grooves extending along the axial direction.

In one embodiment, the bore locating pin includes a cap secured at the other end opposite the tip.

In one embodiment, the length of the active section ranges from 10 mm to 60 mm.

In one embodiment, the surface of the active section is provided with a plurality of elongated grooves extending from the tip along the axial direction.

In one embodiment, the plurality of elongated grooves are arranged on the surface of the active section with the axis of the shaft as the center.

In one embodiment, the depth of the elongated groove gradually becomes shallower from the tip.

In one embodiment, the radius of the elongated groove gradually increases from the tip.

In one embodiment, the osteotome further includes a guide wire configured to replace the burr pin.

100: Osteotome

120: shaft

122: Action segment

122a: Long groove

124: force section

126: handle

126a: Groove

140: Hole positioning needle

140a: tip

140b: the other end

142: cover

L: Length

W: width

D: Depth

In order that the manner in which the described features of the invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to specific embodiments, some of which are illustrated in the drawings. as shown. It is to be noted, however, that the drawings illustrate only typical embodiments of the invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments.

1A and 1B are schematic views of an osteotome according to an embodiment of the invention.

Fig. 2A is a schematic diagram of the working section of the osteotome according to the embodiment of the invention.

Fig. 2B is a front view of the working section of Fig. 2A.

This creation will describe this creation more fully below with reference to the drawings shown in the embodiments. The invention can be implemented in many different forms and should not be limited by the examples herein. Rather, these embodiments are provided so that those skilled in the art can fully understand the present invention. Reference numerals of corresponding elements may correspond to similar elements.

Words used in this work are used to describe specific embodiments only, and do not limit the content of this work. As used herein, the singular forms "a", "the", and "the" also include the plural forms, unless the context requires otherwise. The term "comprising" or "comprising" or "having" used herein indicates the presence of a feature, region, integer, step, operation, element, and/or component, but does not exclude the presence or addition of more other features, regions, Integers, steps, operations, elements, components, and/or groups thereof.

It will be understood that the term "and/or" includes any and all combinations of one or more of the associated listed items. Although words such as "first", "second" and "third" may appear in this creation and may describe different elements, members, regions, parts and/or sections herein, these elements, members, regions, parts and/or or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, section and/or section from another element, component, region, layer or section. Therefore, without departing from the As a premise of the teaching of creation, a first element, component, region, part or section described below may also be named a second element, component, region, layer or section.

The osteotome created in this invention is used for orthopedic surgery. It has the functions of chiseling, guiding and positioning, and scraping bone tissue, etc., so that doctors can reduce the steps of replacing tools in the operation process, thereby increasing the convenience of doctors' operations.

Please refer to the schematic diagram of the osteotome shown in FIG. 1A , the osteotome 100 includes a shaft 120 and a drilling positioning pin 140 . The shaft 120 has an action segment 122 and a force application segment 124 . When the operator uses the osteotome 100 to perform spinal surgery, the force application section 124 is used to provide force (for example, the force provided by the operator) to the action section 122 , and the action section 122 is used to drill into bone. In one embodiment, the diameter of the acting section 122 is smaller than the diameter of the force applying section 124, whereby when the acting section 122 of the osteotome 100 goes deep into the bone, the force applying section 124 is difficult to go deeper because of its larger diameter. Thereby, the osteotome 100 is prevented from going deeper into the bone tissue, so as to avoid causing damage to the spine.

1A and 1B, the shaft 120 is provided with an axial channel perforation penetrating the action section 122 and the force application section 124, therefore, the perforated positioning pin 140 can be movably arranged in the channel perforation , and a tip 140a of the perforated positioning needle 140 protrudes from the passage to the active section 122 (as shown in FIG. 1B ).

In one embodiment, the osteotome 100 further includes a handle 126 fixed to the force applying section 124 . The setting of the handle 126 is convenient for grasping, thereby, it is beneficial for the operator to provide external force on the force applying section 124. For example, the diameter of the handle 126 is larger than the force applying section 124, and its shape is roughly elliptical to facilitate grasping . In one embodiment, the outer surface of the handle 126 can be provided with a plurality of grooves 126a extending along the axial direction, so as to fit the operator's fingers and facilitate gripping. In addition, in an embodiment, in order to increase the operator's comfort when gripping, a soft material, such as rubber, can be selected.

As shown in FIG. 1A, the drilling positioning pin 140 of the osteotome 100 includes a cover 142 fixed on the other end 140b opposite to the tip 140a. The cover 142 and the positioning pin 140 can be separated or integrally formed. The cover 142 is provided with threads and is mutually matched with the shaft 120 (for example, interlocked), so that the perforated positioning pin 140 is installed in the channel perforation of the shaft 120 through the cover 142 arranged on it. (as shown in Figure 1B).

Please refer to FIGS. 2A and 2B for the active section 122 of the shaft 120 of the osteotome 100 . In one embodiment, the length L of the action section 122 ranges from 10 mm to 60 mm. A plurality of elongated grooves 122a extending from the tip of the drilling positioning pin 140 along the axial direction are disposed on the surface of the action section 122 . The elongated groove 122a is used to accommodate bone tissue, so that when the osteotome 100 drilled into the bone is removed from the bone, the purpose of removing unnecessary bone tissue can be achieved at the same time.

In the embodiment shown in FIG. 2A, the elongated groove 122a has a width W, and the width W gradually increases from the tip 140a to the other end 140b. Under this setting, the active section 122 can be easily chiseled. Into the bone, but also can accommodate more bone tissue.

Or, as shown in FIG. 2B, the elongated groove 122a has a depth D, and the depth D gradually becomes shallower from the tip 140a to the other end 140b. Under this arrangement, the active section 122 can be easily Chisel into the bone. Alternatively, the elongated grooves 122a can be plural in order to accommodate more bone tissue. As shown in FIG. On the surface of the active section 122 (for example, like the pinwheel shape shown in FIG. 2B ).

In one embodiment, the drilling positioning pin not only has the function of drilling, but also has the function of positioning. Specifically, after the osteotome has been chiseled into the bone, the chisel positioning pin arranged in the channel of the shaft rod can be taken out through the cover cover disposed on the chisel positioning pin, and a guide wire (not shown in the figure) shown) into the channel of the shaft for the next surgery, so as to achieve the purpose of positioning.

To sum up, the osteotome of this invention is provided with an active section with a long groove, and the long groove can accommodate bone tissue. Therefore, when the osteotome is moved out of the bone, the unnecessary bone tissue can be taken away at the same time, that is, , The osteotome of this creation has the functions of chiseling, guiding and positioning, and scraping bone tissue, etc., which allows doctors to reduce the steps of replacing tools during the operation, thereby increasing the convenience of doctors' operations.

These embodiments and claims do not necessarily require all disclosed technical advantages or technical features to be achieved. Furthermore, the abstract and the title are only for the purpose of facilitating the search of patent documents, and are not intended to limit the scope of this work in any way.

100: Osteotome

120: shaft

122: Action segment

124: force section

126: handle

126a: Groove

140a: tip

142: cover

Claims (10)

An osteotome comprising: A shaft has an action section and a force application section, and the diameter of the action section is smaller than the diameter of the force application section, and the shaft is provided with an axial passage hole penetrating the action section and the force application section; and A perforated positioning pin is movably arranged in the perforation of the channel, and a tip of the perforated positioning pin protrudes from the perforation of the channel to the function section. The osteotome as described in claim 1 further includes a silicone handle fixed to the force-applying section. The osteotome as claimed in claim 2, wherein the outer surface of the silicone handle includes a plurality of grooves extending along the axial direction. According to the osteotome described in claim 1, the drilling positioning pin includes a cover, which is fixed at the other end opposite to the tip. The osteotome as described in Claim 1, wherein, the length of the active section is in the range of 10 mm to 60 mm. The osteotome as claimed in claim 1, wherein the surface of the active section is provided with a plurality of elongated grooves extending from the tip along the axial direction. The osteotome as claimed in claim 6, wherein the plurality of elongated grooves are arranged on the surface of the active section with the axis of the shaft as the center. The osteotome as described in claim 6, wherein the depth of the elongated groove gradually becomes shallower from the tip. The osteotome as claimed in claim 6, wherein the radius of the elongated groove gradually increases from the tip. The osteotome as claimed in claim 1 further includes a guide wire configured to replace the drilling pin.

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