SURGICAL HAMMER WITH ADJUSTABLE MECHANICAL FORCE LIMITATION MECHANISM.
The surgical hammer with a mechanical force limiting mechanism addresses the issue of inconsistent force transmission by using a double-sided gear and spring system to ensure consistent and adjustable force control, improving surgical precision and safety.
Patent Information
- Application Number
- TR202616686
- Authority / Receiving Office
- TR · TR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2026-09-28
- Publication Date
- 2026-10-21
AI Technical Summary
Conventional surgical hammers rely on user-generated force, leading to inconsistent and potentially excessive impact force transmission to surgical instruments, which can cause unintended bone damage or perforation during procedures like sinus lift and osteotomy.
A surgical hammer with an adjustable mechanical force limiting mechanism, utilizing a movable double-sided gear and spring system to control and limit impact force to a predetermined threshold, ensuring consistent force transmission without requiring external energy sources.
The mechanism provides controlled and adjustable force transmission, reducing variability in surgical impacts and preventing excessive force transfer to surgical instruments, enhancing procedural control and safety.
Smart Images

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Abstract
Description
1 TARIFF FEATURES AN ADJUSTABLE MECHANICAL FORCE LIMITING MECHANISM. SURGICAL HAMMER Technical Area The invention is relevant to oral, dental and maxillofacial surgery, particularly bone osteotomy, bone Osteotomes, chisels, or similar tools are used in surgical procedures such as bone separation and shaping. 10 manual, enabling controlled impact application to similar surgical instruments. a device that can be set up, requires no external electrical energy, and transmits an impulse to the surgical instrument. mechanically according to a predetermined force level adjustable mechanical force that allows for limitation and adjustment It relates to a surgical hammer with a restraint mechanism. The Invention's Infrastructure Today, various surgical fields are available, primarily oral, dental, and maxillofacial surgery. Applications include bone osteotomy, bone separation, bone expansion, bone Osteotomes and chisels are used during procedures such as shaping and sinus lifts. or similar surgical instruments for the purpose of applying mechanical impact to surgical instruments. Hammers are used. These surgical hammers are primarily used by surgeons. mechanical energy generated by the striking motion created by the osteotom, chisel, or similar surgical instrument is transferred to the aforementioned instrument, thus enabling the transfer of the device to the surgical tool. the advancement of the instrument through the bone tissue or the relevant surgical procedure 25 It ensures its realization. In conventional surgical hammers, the force transmitted to the surgical instrument depends significantly on the user. The fact that it depends on the force of the blows applied poses a significant problem. Since it is not possible for the user to generate the same intensity with each stroke, 30 consecutive strokes Differences in force can occur between blows, and this situation is particularly problematic. transferred to the surgical instrument in surgical procedures requiring precise and controlled progress This makes it difficult to control the force. The user uses excessively high force. 2 the force generated when it strikes, either directly or without sufficient limitation can be transferred to surgical instruments, such as osteotomes or chisels. This can cause it to progress further than intended. The aforementioned control problem is particularly relevant in sinus lift, osteotomy, bone separation, and bone 5 procedures. It becomes even more important in delicate procedures such as dilation. Sinus lift excessive impact force in applications or uncontrolled progression of osteotoma risk of undesirable situations such as perforation of the sinus membrane can increase the impact, and excessively high impact during osteotomy and bone separation procedures. The force causes the osteotome to advance beyond its targeted position, resulting in 10% damage to the bone tissue. unwanted fractures or cracks may occur and the surgical procedure performed This can lead to a decrease in control over the procedure. Therefore, the surgical procedure... Its reliability depends solely on the surgeon's ability to control the force of the incisions. It should not be possible; the force transmitted to the surgical instrument must be mechanically limited. It is necessary. 15 In the current state of the technique, various surgical and Dental hammer designs have been developed. Within this scope, they are known as Dental Mallets. The product numbered US2376187A, called Controlled Force Mallet. 20, with publication number US5282805A, called the Bi-Spring Surgical Impact Tool. Bi-Spring Surgical Hammer Impact Tools with publication number US12070256B2 patent documents with publication numbers EP4297665A1 and US12004793B2 It is known that in these systems, mechanical energy is transferred via springs. storage, adjustment of impact force, moving mass or moving the use of mechanisms, the utilization of gear and pinion systems and some 25 different structures such as generating controlled impacts with the help of a motor Technical solutions are available. However, the fundamental requirement in surgical procedures is not just a specific one. the generation of impact force or the storage of impact energy within springs 30 or if the force applied by the user exceeds the specified level It is the mechanical limitation of the transfer of excessive force to the surgical instrument. Also the limitation in question can be adjusted according to different usage requirements, The system can be easily installed and restored to its initial state after a blow. 3 for it to rotate and for all these processes to be carried out using external electrical energy, electronic sensors or It is important that this can be done without requiring an electric motor. Adjustable mechanical force limiter developed based on current needs. The invention of the surgical hammer with its mechanism allows the force to be transmitted to the surgical instrument to be 5. to prevent it from depending solely on the user's stroke force and in advance mechanically transmitting force above a specified force level It has a special mechanical structure for restraint. The invention is limited to... a surgical hammer that contains a spring or reduces impact energy not; manual arming, mechanical locking, adjustable force threshold creation, word 10 The issue is mechanically unlocking when the threshold is exceeded, preventing excessive force transmission. limiting and restoring the mechanism to its starting position functions It brings them together within the same mechanical system. Within the scope of the invention, two striking points are located on opposite sides of the hammer head body. one of its surfaces is the mounting surface, and the other is the surgical working surface. It is used. As a result of applying an impact to the mounting surface, the hammer head body The movable double-sided gear inside works in the direction of the working surface. It moves forward, and during this movement, two main springs are compressed. Thus The manual arming operation performed by the user is controlled within the mechanism. It is converted into mechanical motion. One of the key technical differences of the invention is the shank of the movable double-faced gear part. with the expanding and inclined tooth geometry on the side and the lower moving gear wheel It is their working together. The lower gear is a gear that rotates only on a fixed axis. 25 It is not structured as such; the shaft body together with the wedge and carrier element. It can move along the channel inside. The movable double-sided toothed part During its progression, the special gear geometry in question is with the lower moving gear wheel. interacting and the shaft of the carrier element with the wedge carrying the lower movable gear wheel. It allows it to move along the channel inside. Wedge and carrier 30 The movement of the element involves compressing the threshold spring located inside the shaft. thus ensuring that the mechanism operates mechanically at the specified force level. It is set up and locked. 4 The force limiting function of the invention is achieved through the mechanical locking mechanism in question. This is being carried out. Impact on the working surface during surgical use. If applied, the resulting force is up to a predetermined threshold level. The gear is being transferred, and if the threshold level is exceeded, the wedge, the lower movable gear The mechanical locking relationship between the gear and the threshold spring is released, locking the gear. 5 This is resolved. Thus, the user's work surface is subjected to an unnecessarily high level of force. even in the case of a coup attempt, the force exceeding the determined threshold level Transfer to an osteotome, chisel, or similar surgical instrument is restricted. Therefore, force control is not left solely to the user's stroke precision, a force limitation implemented by the hammer's own mechanical structure 10 The function is provided. Another important feature of the invention is that the thresholding spring is positioned in the preferred application. The preload applied to the threshold spring is variable. The force level required to unlock the mechanical lock by changing it is 15. the maximum amount allowed to be modified and consequently transferred to the surgical instrument It becomes possible to adjust the force level. Thus, the system only not as a pulse limiter operating at a constant force level, but as needed as a surgical hammer that can be mechanically adjusted according to the force level It is being structured. 20 After the mechanical threshold is exceeded and the lock is released, it is compressed. The return force of the main springs in this situation drives the movable double-faced gear part. It returns to the starting position. Thus, the force limiting process... then the components of the mechanism are manually returned to their starting positions one by one 25 The system can be re-established without needing to be brought back in. The arming, locking, force limiting, unlocking, and return operations are all interconnected. The fact that it is realized in a mechanically connected manner constitutes the working principle of the invention. It forms the basis. Another advantage of the invention is that the specified functions can be performed electronically. no sensor, electric motor or external electrical power source needed It is not audible. Establishing and limiting the force level; moving couple surface gear part, main springs, movable gear wheel, keyway carrier element and threshold. This is achieved through the mechanical interaction of the springs and coils. This allows for controlled force transmission within a completely mechanical structure. is provided. As a result, the invention reduces the variability in the intensity of strokes applied by the surgeon by 5. Reducing the effect on the force transmitted to the surgical instrument, at the specified level mechanical limitation of excessive force transmission on it, force limit adjustable, the system can be manually set up and mechanically locked, threshold If the force is exceeded, the lock will automatically release and the main springs will return. Thanks to its force, the mechanism can be reset. 10 In this context, surgical devices with adjustable mechanical force limiting mechanisms are included. The hammer differs from known mechanisms for creating controlled surgical blows. an adjustable mechanical force threshold, and the mechanical action that occurs when the threshold is exceeded. The unlocking mechanism and automatic return function are made of the same mechanical structure. by bringing them together, especially in delicate bone surgery applications, excessive 15 It presents a technical solution for limiting force transmission. The structural and characteristic features and all the advantages of the invention are given in the figures below. And thanks to the detailed explanation provided, it will be understood more clearly, and therefore... This assessment was also made taking these figures and detailed explanations into consideration. 20 It needs to be done. Figures that Aid in Explaining the Invention The invention will be described by referring to the attached figures, so that the features of the invention are defined in 25 This will be understood more clearly. However, the purpose of this is to explain the invention with these specific arrangements. It is not about limiting. On the contrary, the invention is defined by the accompanying claims. including all alternatives, modifications and equivalencies that can be included within the field That is also intended. The details shown are only the preferred aspect of the present invention. It was shown to illustrate the regulations and also the rules of the invention and 30 to provide the most useful and easily understandable definition of its conceptual characteristics It should be understood that they are presented for that purpose. 6 Figure 1: Surgical hammer with adjustable mechanical force limiting mechanism. longitudinal section view Figure 2: Cross-sectional view of the hammer head body and handle body. Figure 3: Enlarged view of the gear geometry of the moving part and the upper and lower gears. appearance 5 Figure 4: Surgical device with adjustable mechanical force limiting mechanism. front view of the hammer Figure 5: Surgical device with adjustable mechanical force limiting mechanism. Side view of the hammer. Figure 6: Surgical 10 with adjustable mechanical force limiting mechanism. the hammer's exploded appearance Reference Numbers that Aid in Disclosure of the Invention 1. Left striking surface / cocking piece 15 2. Left main arc 3. Movable double-sided gear 4. Upper gear 5. Right main arc 6. Right striking surface / working surface 20 7. Lower movable gear wheel and locking area. 8. Wedge / support element 9. Threshold / setting spring Disclosure of the Invention 25 This detailed explanation describes a feature with an adjustable mechanical force limiting mechanism. This relates to surgical hammers and is intended solely for the purpose of better understanding the subject. It is explained in a way that will not create any limiting effects. The invention in question; 7 • the mechanism that is set up and activated by the impact applied to it. The left striking surface which enables the double-faced gear part (3) to move / mounting part (1), • stores mechanical energy by becoming compressed during the locking process and releases it when the lock is released. then the movable double-faced gear part (3) returns to its starting position 5 contributing left main arc (2), • The left main spring (2) moves inside the hammer head body during cocking and mechanical locking system with toothed structure that compresses the right main spring (5) movable double-sided gear part (3) that enables the mechanism to work, • interacting with the upper surface of the movable double-faced gear part (3) and the word 10 The upper gear wheel (4) that enables the movement of the subject part, • a movable double-sided gear that clamps during setting and stores mechanical energy. The right main spring (5) which enables the part (3) to return to its starting position, • right-hand strike that ensures controlled impact force is transferred to the surgical instrument. surface / working surface (6), 15 • with the expanding / inclined lower gear geometry of the movable double-faced gear part (3) interacting, not fixed axis, together with wedge / carrier element (8) moving and by means of the said movement the threshold / set-up spring (9) lower movable gear wheel and locking area which contribute to its compression (7) • moving together with the lower movable gear wheel and locking area (7), handle 20 Compression of the threshold / set-off spring (9) that moves through the body and inner channel wedge / support element (8), • The mechanism is compressed by the movement of the wedge / carrier element (8), the specified mechanism allows it to lock at the specified force level and at the defined force level. an unwanted force that, if overcome, allows the lock to be unlocked 25 threshold / set spring (9) which prevents transmission, • left striking surface / cocking piece (1), left main spring (2), movable double-face gear part (3), upper gear wheel (4), right main spring (5), right striking surface / working surface (6) and containing the lower movable gear wheel and locking area (7) and the hammer head housing that enables the operation of these parts, 30 • wedge / carrier that allows the user to hold the surgical hammer. the channel in which the element (8) moves and the threshold / setup broadcast (9) within it stem body and inner channel, 8 • The preload of the threshold / set spring (9) can be changed, which is the preload of the spring. The release force of the lock is changed by altering the load and the surgical instrument. The front panel allows you to adjust the maximum force level that can be transmitted. It includes load adjustment element components. How the invention works; • preload of the threshold / setting spring (9) via preload adjustment element the maximum force allowed to be adjusted and transferred to the surgical instrument determining the level, • Manually apply a blow to the left striking surface / mounting part (1) and 10 initiating the process of setting up the mechanism, • The movable pair is activated by the impact applied to the left striking surface / mounting part (1) right striking surface / working surface (6) of the toothed part (3) moving • left main spring (2) and right 15 during the movement of the movable double-faced gear part (3). Compression of the main spring (5) and mechanical energy in the springs in question storage, • the upper surface of the movable double-faced gear part (3) with the upper gear wheel (4) interaction and the hammer head body of the movable double-faced gear part (3) directing its movement within, 20 • on the shank body and inner channel side of the movable double-faced gear part (3) The expanding / inclined gear geometry found in the lower moving gear wheel and locking mechanism. interacting with region (7), • lower movable gear wheel and locking area (7), movable double face gear 25 together with wedge / carrier element (8) depending on the movement of the part (3). moving • The wedge / carrier element (8) moves along the stem body and the inner channel the act of causing the threshold / set-up spring (9) to be activated as a result of the said action compression, • by compressing the threshold / setting spring (9) the predetermined force threshold is 30 formation of the lower movable gear wheel and locking area (7) with wedge / The mechanism is mechanically installed in the installed position by means of the carrier element (8). locking, 9 • right striking surface after the mechanism is brought to the cocked position / (6) application of surgical working pulse to the working surface, • the impact force applied to the right striking surface / working surface (6) beforehand up to the specified force threshold, osteotome, chisel or similar surgical tool transfer to the device, 5 • the impact force applied to the right striking surface / working surface (6) beforehand If the specified force threshold is exceeded, the lower movable gear and locking mechanism will malfunction. region (7), between wedge / carrier element (8) and threshold / sill spring (9) Release of the mechanical interlocking relationship, • The mechanism is released from the locked position by releasing the mechanical locking relationship. removal and excessive force above a predetermined force threshold transferring to an osteotome, chisel, or similar surgical instrument restriction, • after the mechanical lock is released, the left main spring (2) and the right main spring (5) Release of stored mechanical energy, 15 • movable via the return force of the left main spring (2) and the right main spring (5) Bringing the double-faced gear part (3) to its starting position, • with the movable double-faced gear part (3) coming to its starting position making the mechanism re-established and, if needed, the left By applying another blow to the striking surface / mounting part (1), a new 20 Re-establishing the mechanism for controlled surgical impact: procedural steps It includes. All technical and other specifications mentioned in each request are followed by a reference number. ...and this reference number is only for the purpose of making it easier to understand the requests. 25 They have been used, therefore this reference number is for illustrative purposes only. It should not be assumed that the scope of the element indicated is limited. A technical expert can assess the novelty of the invention and similar structures. by using and / or this structure used in the relevant technique 30 It is clear that this can be applied to other fields with similar purposes. Therefore, such a It is also obvious that these structures will lack the criterion of surpassing innovation.
Claims
REQUESTS 1. The invention is a surgical hammer with an adjustable mechanical force limiting mechanism. It is related to and its characteristic is; • The mechanism is set up by the impact applied to it and the moving 5 The left striking surface which enables the double-faced gear part (3) to move / mounting part (1), • stores mechanical energy by becoming compressed during the locking process and releases it when the lock is released. then the movable double-faced gear part (3) returns to its starting position contributing left main arc (2), 10 • The left main spring (2) moves inside the hammer head body during cocking and mechanical locking system with toothed structure that compresses the right main spring (5) movable double-sided gear part (3) that enables the mechanism to work, • interacting with the upper surface of the moving double-faced gear part (3) and the word The upper gear wheel (4) which enables the movement of the subject part, 15 • a movable double-sided gear that clamps during setting and stores mechanical energy. The right main spring (5) which enables the part (3) to return to its starting position, • right-hand strike that ensures controlled impact force is transferred to the surgical instrument. surface / working surface (6), • with expanding / inclined lower gear geometry of the movable double-faced gear part (3) 20 interacting, not fixed axis, together with wedge / carrier element (8) moving and by means of the said movement the threshold / set-up spring (9) lower movable gear wheel and locking area (7) which contribute to its compression, • The handle moves together with the lower movable gear wheel and the locking area (7). Compression of the threshold / set-off spring (9) progressing through the body and inner channel 25 wedge / support element (8), • The mechanism is compressed by the movement of the wedge / carrier element (8), the specified mechanism allows it to lock at the specified force level and at the defined force level. an unwanted force that, if overcome, allows the lock to be unlocked Threshold / set spring (9) preventing transmission, 30 • left striking surface / cocking piece (1), left main spring (2), movable double-face gear part (3), upper gear wheel (4), right main spring (5), right striking surface / working surface 11 (6) and containing the lower movable gear wheel and locking area (7) and the hammer head housing that enables the parts in question to function, • wedge / carrier that allows the user to hold the surgical hammer. the channel in which the element (8) moves and the threshold / setup broadcast (9) within it the stem body and inner channel, 5 • The preload of the threshold / set spring (9) can be changed, which is the preload of the spring. The release force of the lock is changed by altering the load and the surgical instrument. The front panel allows you to adjust the maximum force level that can be transmitted. It includes load adjustment element components.
2. The invention describes a surgical device with an adjustable mechanical force limiting mechanism. This relates to the working method of the hammer and its characteristics are: • preload of the threshold / setting spring (9) via preload adjustment element the maximum force allowed to be adjusted and transferred to the surgical instrument determining the level, 15 • Manually apply a blow to the left striking surface / mounting part (1) and initiating the process of setting up the mechanism, • The movable pair is activated by the impact applied to the left striking surface / mounting part (1) right striking surface / working surface (6) of the toothed part (3) moving, 20 • left main spring (2) and right during the movement of the movable double-faced gear part (3) Compression of the main spring (5) and mechanical energy in the springs in question storage, • the upper surface of the movable double-faced gear part (3) with the upper gear wheel (4) interacting and the movable double-faced gear part (3) hammer head body 25 directing its movement within, • on the shank body and inner channel side of the movable double-faced gear part (3) The expanding / inclined gear geometry found in the lower moving gear wheel and locking mechanism. interacting with region (7), • lower movable gear wheel and locking area (7), movable double face gear 30 together with wedge / carrier element (8) depending on the movement of the part (3). moving 12 • The wedge / carrier element (8) moves along the stem body and the inner channel the act of causing the threshold / set-up spring (9) to be activated as a result of the said action compression, • the predetermined force threshold by compressing the threshold / setting spring (9) formation and locking zone (7) with wedge / 5 The mechanism is mechanically installed in the installed position by means of the carrier element (8). locking, • right striking surface after the mechanism is brought to the cocked position / (6) application of surgical working pulse to the working surface, • The impact force applied to the right striking surface / working surface (6) is 10 beforehand up to the specified force threshold, osteotome, chisel or similar surgical tool transfer to the device, • the impact force applied to the right striking surface / working surface (6) beforehand If the specified force threshold is exceeded, the lower movable gear and locking mechanism will malfunction. 15 between region (7), wedge / carrier element (8) and threshold / mounting spring (9) Release of the mechanical interlocking relationship, • the mechanism leaves the locked position upon release of the mechanical locking relationship. removal and excessive force above a predetermined force threshold transferring to an osteotome, chisel, or similar surgical instrument restriction, 20 • after the mechanical lock is released, the left main spring (2) and the right main spring (5) release of stored mechanical energy, • movable via the return force of the left main spring (2) and the right main spring (5) Bringing the double-faced gear part (3) to its starting position, • 25 when the movable double-faced gear part (3) comes to its starting position making the mechanism re-established and, if needed, the left By applying another blow to the striking surface / mounting part (1) a new one Re-establishing the mechanism for controlled surgical impact: procedural steps It includes.
