Handle for medical screwdriver and medical screwdriver

Abstract

The utility model relates to a handle for a medical screwdriver and the medical screwdriver. The handle includes a grip section, a head engagement section, and an extension section. The gripping section is configured to be gripped by a user. The tool bit joint section is constructed to be used for being connected with a tool bit of the medical screwdriver. The distal end of the extension section is connected to the proximal end of the grip section, and the proximal end of the extension section is connected to the bit engagement section. Wherein the holding section and / or the extension section are / is provided with a cavity. The weight of the handle can be reduced through the cavity, then the weight of the medical screwdriver with the handle is reduced, and the medical screwdriver with the handle can be conveniently carried by a user and used in the operation process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, and in particular to a handle for a medical screwdriver and a medical screwdriver. Background Art

[0002] This section provides background information related to the present invention which does not necessarily constitute prior art.

[0003] Medical screwdrivers are surgical instruments frequently used in surgical operations, and are suitable for screwing in or removing bone screws during orthopedic operations, for example. The handles and blades of existing medical screwdrivers are both made of metal materials, which are heavy and inconvenient for medical personnel to use, especially when medical personnel need to carry the medical screwdriver (for example, put the medical screwdriver in a mobile surgical tool box) for outdoor first aid. Utility Model Content

[0004] The purpose of the utility model is to solve one or more of the above-mentioned technical problems.

[0005] In particular, an object of the present invention is to provide a handle for a medical screwdriver and a medical screwdriver having the handle which can reduce weight.

[0006] According to a first aspect of the utility model, a handle for a medical screwdriver is provided. The handle comprises: a gripping section configured to be gripped by a user; a tool head engaging section configured to engage with a tool head of the medical screwdriver; and an extension section, the distal end of the extension section being connected to the proximal end of the gripping section, and the proximal end of the extension section being connected to the tool head engaging section; wherein the gripping section and / or the extension section are provided with a cavity.

[0007] According to the utility model, a cavity is provided in at least one of the gripping section and the extending section of the handle for the medical screwdriver, and the cavity can reduce the weight of the handle, thereby reducing the weight of the medical screwdriver with the handle, making it easier for the user to carry and use the medical screwdriver with the handle during surgery.

[0008] Optionally, the gripping section comprises: a first longitudinal rib extending from the distal end of the gripping section to the proximal end of the gripping section; a second longitudinal rib extending from the distal end of the gripping section to the proximal end of the gripping section and intersecting and staggered with the first longitudinal rib; and a plurality of first transverse ribs spaced between the distal end and the proximal end of the gripping section and intersecting with the first longitudinal rib and the second longitudinal rib to form the cavity between adjacent first transverse ribs. The first longitudinal ribs and the second longitudinal ribs extending between the distal end and the proximal end of the gripping section and intersecting with each other and the plurality of first transverse ribs spaced between the distal end and the proximal end of the gripping section can provide sufficient strength and rigidity for the gripping section while providing the above-mentioned cavity to reduce weight.

[0009] Optionally, the first longitudinal ribs and the second longitudinal ribs intersect to form a cross. When the first longitudinal ribs and the second longitudinal ribs intersect to form a cross, the first longitudinal ribs, the second longitudinal ribs and the plurality of first transverse ribs can provide uniform and sufficient strength and rigidity for the gripping section.

[0010] Optionally, the extension section includes: a third longitudinal rib extending from the distal end of the extension section to the proximal end of the extension section; a fourth longitudinal rib extending from the distal end of the extension section to the proximal end of the extension section and staggered with the third longitudinal rib; and a plurality of second transverse ribs spaced between the distal end and the proximal end of the extension section and intersecting with the third longitudinal rib and the fourth longitudinal rib to form the cavity between adjacent second transverse ribs. The third longitudinal ribs and the fourth longitudinal ribs extending between the distal end and the proximal end of the extension section and staggered with each other and the plurality of second transverse ribs spaced between the distal end and the proximal end of the extension section can provide sufficient strength and rigidity for the extension section while providing the above-mentioned cavity to reduce weight.

[0011] Optionally, the third longitudinal rib is integrated with the first longitudinal rib, and the fourth longitudinal rib is integrated with the second longitudinal rib. The longitudinal ribs of the gripping section are integrated with the longitudinal ribs of the extending section, which can further improve the strength and rigidity of the handle.

[0012] Optionally, the third longitudinal rib and the fourth longitudinal rib intersect to form a cross. When the third longitudinal rib and the fourth longitudinal rib intersect to form a cross, the third longitudinal rib, the fourth longitudinal rib and the plurality of second transverse ribs can provide uniform and sufficient strength and rigidity for the extension section.

[0013] Optionally, a bit receiving hole surrounded by a side wall is provided in the bit engagement section, the bit receiving hole has an opening located at the proximal end of the bit engagement section, and a fastener receiving hole penetrating the side wall is provided on the side wall. In this way, the bit can be detachably engaged to the bit engagement section of the handle.

[0014] Optionally, a receiving recess is provided at the proximal end of the third longitudinal rib and the proximal end of the fourth longitudinal rib, and the receiving recess is communicated with the tool head receiving hole. The receiving recess formed by the third longitudinal rib and the fourth longitudinal rib can accommodate a part of the tool head of the medical screwdriver, so that the tool head can be more stably connected to the handle.

[0015] According to a second aspect of the present invention, a medical screwdriver is provided. The medical screwdriver comprises any of the above-mentioned handles and a bit connected to the bit engaging section of the handle. The medical screwdriver provided by the present invention has the beneficial effects described above for the handle because it has the handle provided according to the first aspect of the present invention. For the sake of brevity, it will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The foregoing and other features and characteristics of the present application will become more apparent from the following detailed description with reference to the accompanying drawings, which are provided as examples only and are not necessarily drawn to scale. The same reference numerals are used in the drawings to indicate the same components, in which:

[0017] Figure 1 A three-dimensional schematic diagram of a medical screwdriver according to a preferred embodiment of the utility model is shown;

[0018] Figure 2 Shows Figure 1 A three-dimensional schematic diagram of a handle of a medical screwdriver;

[0019] Figure 3 Shows Figure 1 Another perspective schematic diagram of the handle of the medical screwdriver;

[0020] Figure 4 Shows Figure 2 A front view of the handle in ; and

[0021] Figure 5 Shown along Figure 4Sectional view along line AA. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention will now be described in detail in conjunction with the accompanying drawings. The following description is merely exemplary in nature and is not intended to limit the present invention and its application or use.

[0023] The utility model provides a handle for a medical screwdriver and the medical screwdriver. Figure 1 FIG. 2 shows a three-dimensional schematic diagram of a medical screwdriver 1 according to a preferred embodiment of the present utility model. Figure 1 As shown, the medical screwdriver 1 mainly includes a handle 10 and a cutter head 20 connected to the handle 10. The handle 10 as a whole can be made of plastic material. The plastic material can be any suitable engineering plastic known in the art that can meet the medical grade requirements. On the one hand, the density of the plastic material is lower than that of the metal material, so the weight of the handle 10 can be reduced, and then the weight of the medical screwdriver 1 with the handle 10 can be reduced, which is convenient for the user (usually a medical staff) to carry and use the medical screwdriver 1 during surgery. On the other hand, the plastic material can allow the handle 10 to be mass-produced through an injection molding process, which can improve production efficiency and reduce the production cost of a single handle 10. Preferably, the cutter head 20 is detachably connected to the handle 10. For example, the cutter head 20 is detachably connected to the handle 10 through one or more fasteners 30. Preferably, one type of handle 10 can be adapted to different types of cutter heads 20, such as a "cross" cutter head, a "one" cutter head, etc. The handle 10 can be disposable to avoid bacterial infection during surgery due to incomplete disinfection of the handle 10.

[0024] The following will be combined Figures 2 to 5 The specific structure of the handle 10 of the present invention is described in detail. Figure 2 Shows Figure 1 A three-dimensional schematic diagram of the handle 10 of the medical screwdriver 1 in FIG. Figure 3 Shows Figure 1 Another perspective schematic diagram of the handle 10 of the medical screwdriver 1 in FIG. Figure 4 Shows Figure 2 A front view of the handle 10 in FIG. Figure 5 Shown along Figure 4 Sectional view along line AA.

[0025] like Figures 2 to 5As shown, the handle 10 includes a grip section 110, an extension section 120 and a bit engagement section 130, wherein the extension section 120 is located between the grip section 110 and the bit engagement section 130. The grip section 110 is configured to be gripped by a user. The grip section 110 has a generally ellipsoidal shape and has a generally flat surface at a distal end 111 further away from the extension section 120 and the bit engagement section 130 to improve the comfort of the user when gripping the handle 10. The distal end 121 of the extension section 120 is connected to the proximal end 112 of the grip section 110, and the proximal end 122 of the extension section 120 is connected to the bit engagement section 130, which is configured to be used with a bit 20 ( Figure 1 ) are engaged. The gripping section 110, the extension section 120 and the blade engaging section 130 may be integrally formed. The extension section 120 and the blade engaging section 130 are thinner elongated sections than the gripping section 110, so that the blade 20 engaged at the blade engaging section 130 can be placed at any desired position.

[0026] It should be noted that the "distal end" and "proximal end" referred to in this article are relative to the treatment site when the patient is treated using the medical screwdriver 1 with the handle 10. Specifically, the end close to the treatment site of the patient is the "proximal end", and the end away from the treatment site of the patient is the "distal end".

[0027] like Figures 2 to 5 As shown, a cavity 140 is provided in the grip section 110 and the extension section 120 of the handle 10. In a preferred embodiment of the present invention, the cavity 140 is open to the outside. The cavity 140 can reduce the weight of the handle 10, thereby reducing the weight of the medical screwdriver 1 having the handle 10, making it easier for the user to carry and use the medical screwdriver 1 having the handle 10 during surgery. Specifically, in a preferred embodiment of the present invention, a first cavity 113 is provided in the grip section 110 of the handle 10, and a second cavity 123 is provided in the extension section 120. Of course, it can be understood that in other embodiments not shown in the present invention, only the first cavity 113 may be provided in the grip section 110, or only the second cavity 123 may be provided in the extension section 120.

[0028] The first cavity 113 in the gripping section 110 can be implemented in any suitable manner. Specifically, in a preferred embodiment of the present invention, Figures 2 to 5As shown, the gripping section 110 includes a first longitudinal rib 114, a second longitudinal rib 115 and a plurality of first transverse ribs 116. The first longitudinal rib 114 extends from the distal end 111 of the gripping section 110 to the proximal end 112 of the gripping section 110. Similarly, the second longitudinal rib 115 also extends from the distal end 111 of the gripping section 110 to the proximal end 112 of the gripping section 110 and is arranged alternately with the first longitudinal rib 114. In a preferred embodiment of the present invention, the first longitudinal rib 114 and the second longitudinal rib 115 may directly intersect. Optionally, in other embodiments not shown in the present invention, the gripping section 110 may include a first body extending from a distal end 111 of the gripping section 110 to a proximal end 112 of the gripping section 110, the first body being located in the center of the gripping section 110 and being substantially cylindrical in shape, and the first longitudinal ribs 114 and the second longitudinal ribs 115 being respectively connected to the first body and extending from the first body. The staggered first longitudinal ribs 114 and the second longitudinal ribs 115 can separate the gripping section 110 into a plurality of (e.g., four) spaces. Preferably, the first longitudinal ribs 114 and the second longitudinal ribs 115 intersect in a "cross" shape. That is, the first longitudinal ribs 114 and the second longitudinal ribs 115 intersect at 90 degrees at their respective central axes of symmetry. In this way, the first longitudinal ribs 114 and the second longitudinal ribs 115 can evenly separate the gripping section 110 into four spaces. A plurality of first transverse ribs 116 are arranged at intervals between the distal end 111 of the gripping section 110 and the proximal end 112 of the gripping section 110 and intersect with the first longitudinal ribs 114 and the second longitudinal ribs 115 to form a plurality of the above-mentioned first cavities 113 between adjacent first transverse ribs 116. The first cavity 113 is surrounded by adjacent first transverse ribs 116, a portion of the first longitudinal ribs 114, and a portion of the second longitudinal ribs 115. The first longitudinal ribs 114 and the second longitudinal ribs 115 extending between the distal end 111 and the proximal end 112 of the gripping section 110 and arranged alternately with each other, and the plurality of first transverse ribs 116 arranged at intervals between the distal end 111 and the proximal end 112 of the gripping section 110 can provide sufficient strength and rigidity for the gripping section 110 while providing the above-mentioned first cavities 113 to reduce weight. Especially when the first longitudinal ribs 114 and the second longitudinal ribs 115 intersect in a cross shape, the first longitudinal ribs 114 , the second longitudinal ribs 115 and the plurality of first transverse ribs 116 can provide the grip section 110 with uniform and sufficient strength and rigidity.

[0029] Similarly, the second cavity 123 in the extension section 120 can also be implemented in any suitable manner. Specifically, in a preferred embodiment of the present invention, Figures 2 to 5As shown, the extension section 120 includes a third longitudinal rib 124, a fourth longitudinal rib 125 and a plurality of second transverse ribs 126. The third longitudinal rib 124 extends from the distal end 121 of the extension section 120 to the proximal end 122 of the extension section 120. Similarly, the fourth longitudinal rib 125 also extends from the distal end 121 of the extension section 120 to the proximal end 122 of the extension section 120 and is staggered with the third longitudinal rib 124. In a preferred embodiment of the present invention, the third longitudinal rib 124 and the fourth longitudinal rib 125 can directly intersect. Optionally, in other embodiments not shown in the present invention, the extension section 120 may include a second body extending from the distal end 121 of the extension section 120 to the proximal end 122 of the extension section 120, the second body being located at the center of the extension section 120 and being substantially cylindrical, and the third longitudinal ribs 124 and the fourth longitudinal ribs 125 being respectively connected to the second body and extending from the second body. The staggered third longitudinal ribs 124 and the fourth longitudinal ribs 125 can separate the extension section 120 into a plurality of (e.g., four) spaces. Preferably, the third longitudinal ribs 124 and the fourth longitudinal ribs 125 intersect in a "cross" shape. That is, the third longitudinal ribs 124 and the fourth longitudinal ribs 125 intersect at 90 degrees at the symmetric central axis of the two, respectively. In this way, the third longitudinal ribs 124 and the fourth longitudinal ribs 125 can evenly separate the extension section 120 into four spaces. A plurality of second transverse ribs 126 are arranged at intervals between the distal end 121 of the extension section 120 and the proximal end 122 of the extension section 120 and intersect with the third longitudinal ribs 124 and the fourth longitudinal ribs 125 to form a plurality of the above-mentioned second cavities 123 between adjacent second transverse ribs 126. The second cavities 123 are surrounded by adjacent second transverse ribs 126, a portion of the third longitudinal ribs 124, and a portion of the fourth longitudinal ribs 125. The third longitudinal ribs 124 and the fourth longitudinal ribs 125 extending between the distal end 121 and the proximal end 122 of the extension section 120 and arranged alternately with each other, and the plurality of second transverse ribs 126 arranged at intervals between the distal end 121 and the proximal end 122 of the extension section 120 can provide sufficient strength and rigidity to the extension section 120 while providing the above-mentioned second cavities 123 to reduce weight. Especially when the third longitudinal rib 124 and the fourth longitudinal rib 125 intersect in a "cross" shape, the third longitudinal rib 124 , the fourth longitudinal rib 125 and the plurality of second transverse ribs 126 can provide uniform and sufficient strength and rigidity for the extension section 120 .

[0030] Preferably, if Figure 5As shown, the third longitudinal rib 124 of the extension section 120 is integrated with the first longitudinal rib 114 of the grip section 110. The first longitudinal rib 114 has the smallest radial dimension at the proximal end 112 of the grip section 110 connected to the extension section 120, and smoothly transitions to the third longitudinal rib 124 of the extension section 120. Similarly, the fourth longitudinal rib 125 of the extension section 120 is integrated with the second longitudinal rib 115 of the grip section 110. The second longitudinal rib 115 has the smallest radial dimension at the proximal end 112 of the grip section 110 connected to the extension section 120, and smoothly transitions to the fourth longitudinal rib 125 of the extension section 120. The longitudinal ribs of the grip section 110 and the longitudinal ribs of the extension section 120 are integrated, which can further improve the strength and rigidity of the handle 10.

[0031] As described above, the blade head 20 of the medical screwdriver 1 is preferably connected to the handle 10 of the medical screwdriver 1 in a detachable manner. Specifically, in a preferred embodiment of the present invention, Figures 2 to 5 As shown, a bit receiving hole 131 is provided in the bit engaging section 130 of the handle 10. The bit receiving hole 131 is surrounded by a side wall 132, and the opening is located at the proximal end 133 of the bit engaging section 130. A portion of the bit 20 (e.g., a bit connecting shaft not shown) can be accommodated in the bit receiving hole 131. A fastener receiving hole 134 penetrating the side wall 132 is provided on the side wall 132 of the bit engaging section 130. Preferably, the fastener receiving holes 134 are multiple and symmetrically arranged on the side wall 132 of the bit engaging section 130, so as to stably engage the bit 20 in the bit engaging section 30. Preferably, the third longitudinal rib 124 and the fourth longitudinal rib 125 of the extension section 20 are recessed at the proximal end toward the distal end to form a receiving recess 127 at the proximal end, and the receiving recess 127 is connected to the bit receiving hole 131 in the bit engaging section 130 for accommodating a portion of the bit 20 of the medical screwdriver 1, so that the bit 20 can be more stably engaged to the handle 10.

[0032] It should be noted that, although in a preferred embodiment of the present invention, the cutter head 20 is shown to be coupled to the cutter head coupling section 130 of the handle 10 via a fastener 30, it is understandable that the cutter head 20 may be coupled to the cutter head coupling section 130 of the handle 10 in any other suitable manner. For example, an internal thread may be provided in the cutter head receiving hole 131 of the cutter head coupling section 130, which may be matched with an external thread on the cutter head connecting shaft of the cutter head 20 of the medical screwdriver 1, so that the cutter head connecting shaft of the cutter head 20 may be screwed into the cutter head receiving hole 131 of the cutter head coupling section 130.

[0033] In summary, according to the utility model, a cavity 140 is provided in at least one of the gripping section 110 and the extension section 120 of the handle 10 for the medical screwdriver 1, and the cavity 140 can reduce the weight of the handle 10, thereby reducing the weight of the medical screwdriver 1 with the handle 10, making it easier for the user to carry and use the medical screwdriver 1 with the handle 10 during surgery. In addition, according to the utility model, the handle 10 for the medical screwdriver 1 can provide sufficient strength and rigidity through the structural design of the first longitudinal rib 114, the second longitudinal rib 115 and the plurality of first transverse ribs 116 of the gripping section 110, and the third longitudinal rib 124, the fourth longitudinal rib 125 and the plurality of second transverse ribs 126 of the extension section 120. The inventors have found that Figures 2 to 5 The handle 10 of the medical screwdriver 1 of the preferred embodiment shown in FIG. 1 can withstand a medical standard torque of 3 Nm without being damaged even if engineering plastics known in the art that can meet medical grade requirements are used.

[0034] It should be understood that various different embodiments can be further designed by combining or modifying different embodiments and various technical features in different ways.

[0035] The above describes the preferred embodiments according to the present invention in conjunction with the specific embodiments. It is understood that the above description is only exemplary and not restrictive. Without departing from the scope of the present invention, those skilled in the art can think of various variations and modifications with reference to the above description. These variations and modifications are also included in the protection scope of this application.

Claims

1. A handle for a medical screwdriver, characterized in that: The handle comprises: a grip section configured to be gripped by a user; a bit engaging section configured to engage a bit of the medical screwdriver; and an extension section, a distal end of the extension section being connected to a proximal end of the grip section, and a proximal end of the extension section being connected to the blade engaging section; Wherein, the gripping section and / or the extending section is provided with a cavity.

2. The handle according to claim 1, characterized in that: The grip section comprises: a first longitudinal rib extending from a distal end of the grip section to a proximal end of the grip section; a second longitudinal rib extending from a distal end of the grip section to a proximal end of the grip section and interlaced with the first longitudinal rib; and A plurality of first transverse ribs are spaced apart between the distal end of the gripping section and the proximal end of the gripping section and intersect with the first longitudinal ribs and the second longitudinal ribs to form the cavity between adjacent first transverse ribs.

3. The handle according to claim 2, characterized in that: The first longitudinal rib and the second longitudinal rib intersect to form a "cross" shape.

4. The handle according to claim 2, characterized in that: The extension section comprises: a third longitudinal rib extending from a distal end of the extension segment to a proximal end of the extension segment; a fourth longitudinal rib extending from the distal end of the extension section to the proximal end of the extension section and interlaced with the third longitudinal rib; and A plurality of second transverse ribs are spaced apart between the distal end of the extension section and the proximal end of the extension section and intersect with the third longitudinal rib and the fourth longitudinal rib to form the cavity between adjacent second transverse ribs.

5. The handle according to claim 4, characterized in that: The third longitudinal rib is integrated with the first longitudinal rib, and the fourth longitudinal rib is integrated with the second longitudinal rib.

6. The handle according to claim 4, characterized in that: The third longitudinal rib and the fourth longitudinal rib intersect to form a "cross" shape.

7. The handle according to claim 4, characterized in that: The bit engaging section is provided with a bit receiving hole surrounded by side walls, the bit receiving hole has an opening located at the proximal end of the bit engaging section, and the side walls are provided with fastener receiving holes penetrating the side walls.

8. The handle according to claim 7, characterized in that: A receiving recess is provided at the proximal end of the third longitudinal rib and the proximal end of the fourth longitudinal rib, and the receiving recess is communicated with the tool head receiving hole.

9. A medical screwdriver, characterized in that: The medical screwdriver comprises a handle according to any one of claims 1 to 8 and a bit connected to the bit engaging section of the handle.

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